Method of preparing certain 3-halo-imidazopyridines

ABSTRACT

The invention relates to bradykinin antagonists of the formula: ##STR1## wherein R 1  is halogen, 
     R 2  and R 3  are each hydrogen, lower alkyl, halo(lower)alkyl or acyl, 
     R 4  is aryl having suitable substituent(s), or a heterocyclic group optionally having suitable substituent(s), 
     Q is O or N--R 11 , in which R 11  is hydrogen or acyl, and 
     A is lower alkylene, 
     and pharmaceutically acceptable salts thereof.

This is a division of application Ser. No. 08/441,786 filed on May 16,1995 now U.S. Pat. No. 5,574,042 which is a continuation of applicationSer. No. 08/235,632 filed on Apr. 29, 1994 now abandoned, which is aContinuation-in-Part of application Ser. No. 08/142,967 filed on Oct.29, 1993 now abandoned.

This invention relates to new heterocyclic compounds andpharmaceutically acceptable salts thereof.

More particularly, it relates to new heterocyclic compounds andpharmaceutically acceptable salts thereof which have activities asbradykinin antagonists, to processes for preparation thereof, to apharmaceutical composition comprising the same, and to methods of usingthe same therapeutically in the prevention and/or the treatment ofbradykinin or its analogues mediated diseases such as allergy,inflammation, autoimmune disease, shock, pain, or the like, in humanbeing or animals.

One object of this invention is to provide new and useful heterocycliccompounds and pharmaceutically acceptable salts thereof which possessactivities as bradykinin antagonists.

Another object of this invention is to provide processes for thepreparation of said compounds and salts thereof.

A further object of this invention is to provide a pharmaceuticalcomposition comprising, as an active ingredient, said heterocycliccompounds and pharmaceutically acceptable salts thereof.

Still further object of this invention is to provide a therapeuticalmethod for the prevention and/or the treatment of bradykinin or itsanalogues mediated diseases such as allergy, inflammation, autoimmunedisease, shock, pain, or the like, using said heterocyclic compounds andpharmaceutically acceptable salts thereof.

Some heterocyclic compounds have been known as described, for example,in J. Med. Chem., 28, 876-892 (1985). However, it is not known that saidcompounds have activities as bradykinin antagonists.

The object heterocyclic compounds of this invention are new and can berepresented by the following general formula I!: ##STR2## wherein R¹ ishalogen,

R² and R³ are each hydrogen, lower alkyl, halo(lower)alkyl or acyl,

R⁴ is aryl having suitable substituent(s), or a heterocyclic groupoptionally having suitable substituent(s),

Q is O or N--R¹¹, in which R¹¹ is hydrogen or acyl, and

A is lower alkylene.

The object compound I! or its salt can be prepared by processes asillustrated in the following reaction schemes. ##STR3## wherein R⁵ ishydrogen or lower alkyl,

R⁶, R⁷, R⁸ and R⁹ are each hydrogen or halogen,

R¹⁰ is acyl,

R_(a) ¹⁰ is acyl having amino,

R_(b) ¹⁰ is acyl having acylamino,

R_(c) ¹⁰ is acyl having lower alkylamino or acyl havingar(lower)alkylamino,

R¹² is hydrogen, lower alkyl, lower alkoxy(lower)alkyl, loweralkylamino(lower)alkyl, heterocyclic(lower)alkyl, a heterocyclic group,lower alkenyl, lower alkynyl, lower alkylcarbamoyl(lower)alkyl,protected or unprotected hydroxy(lower)alkyl or aryl optionallysubstituted with lower alkylamino, and

R¹³ is hydrogen, lower alkyl, lower alkoxy(lower)alkyl or protected orunprotected hydroxy(lower)alkyl, or

R¹² and R¹³ are taken together with the attached nitrogen atom to form aheterocyclic group optionally having suitable substituent(s),

(AA) is amino acid residue,

X is a leaving group,

Y is NH or lower alkenylene,

Z is CH or N, and

R¹, R², R³, R⁴, Q and A are each as defined above.

In the above and subsequent description of the present specification,suitable examples of the various definitions to be included within thescope of the invention are explained in detail in the following.

The term "lower" is intended to mean a group having 1 to 6 carbonatom(s), unless otherwise provided.

In this respect, the term "lower" in lower alkenyl moiety, lower alkynylmoiety and ar(lower)alkenyl moiety in the various definitions isintended to mean a group having 2 to 6 carbon atoms.

Further, the term "lower" in lower alkenoyl moiety, lower alkynoylmoiety, cyclo(lower)alkyl moiety, cyclo(lower)alkenyl moiety,ar(lower)alkenoyl moiety, ar(lower)alkynoyl moiety andheterocyclic(lower)alkenoyl moiety in the various definitions isintended to mean a group having 3 to 6 carbon atoms.

Suitable "halogen" may be fluorine, chlorine, bromine and iodine.

Suitable "aryl" may be phenyl, naphthyl, phenyl substituted with loweralkyl e.g. tolyl, xylyl, mesityl, cumenyl, di(tert-butyl)phenyl, etc.!and the like, in which preferable one is phenyl and tolyl.

Suitable "lower alkyl" and lower alkyl moiety in the terms"heterocyclic(lower)alkyl", and "lower alkylamino" may be straight orbranched one such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl,tert-butyl, pentyl, hexyl or the like, in which preferable one is C₁ -C₄lower alkyl such as methyl, ethyl, propyl, isobutyl or tert-butyl.

Suitable "lower alkylene" may be a straight or branched one such asmethylene, ethylene, trimethylene, methylmethylene, tetramethylene,ethylethylene, propylene, pentamethylene, hexamethylene or the like, inwhich the most preferable one is methylene.

Suitable "halo(lower)alkyl" may be fluoromethyl, difluoromethyl,trifluoromethyl, chloromethyl, dichloromethyl, bromomethyl, fluoroethyl,difluoroethyl, chloroethyl, dichloroethyl, or the like.

Suitable "lower alkenylene" may be a straight or branched C₂ -C₆alkenylene such as vinylene, methylvinylene, propenylene,1,3-butadienylene or the like, in which the most preferable one isvinylene.

Suitable "lower alkenyl" may be vinyl, allyl, methylpropenyl, butenyl,pentenyl or the like.

Suitable "lower alkynyl" may be ethynyl, propynyl, butynyl, pentynyl orthe like.

Suitable "lower alkylcarbamoyl(lower)alkyl" may bemethylcarbamoylmethyl, methylcarbamoylethyl, ethylcarbamoylethyl,dimethylcarbamoylethyl or the like.

Suitable "acyl" may be substituted or unsubstituted alkanoyl such asalkanoyl e.g. formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl,isovaleryl, pivaloyl, hexanoyl, heptanoyl, 3,3-dimethylbutyryl, etc.!,halo(lower)alkanoyl e.g. chloroacetyl, trifluoroacetyl, bromoacetyl,bromobutyryl, heptafluorobutyryl, etc.!, hydroxy(lower)alkanoyl e.g.glycoloyl, lactoyl, 3-hydroxypropionyl, glyceroyl, etc.!, loweralkylsulfonyloxy(lower)alkanoyl e.g. mesyloxyacetyl,ethylsulfonyloxyacetyl, mesyloxypropionyl, etc.!, loweralkoxy(lower)alkanoyl e.g. methoxyacetyl, ethoxyacetyl,methoxypropionyl, ethoxypropionyl, propoxypropionyl, methoxybutyryl,etc.!, lower alkylthio(lower)alkanoyl e.g. methylthioacetyl,ethylthioacetyl, methylthiopropionyl, ethylthiopropionyl,propylthiopropionyl, methylthiobutyryl, etc.!, loweralkanoyloxy(lower)alkanoyl e.g. acetyloxyacetyl, acetyloxypropionyl,propionyloxyacetyl, etc.!, aryloxy(lower)alkanoyl e.g. phenyloxyacetyl,phenyloxypropionyl, tolyloxyacetyl, naphthyloxyacetyl, etc.!,aroyl(lower)alkanoyl e.g. phenyloxalyl, benzoylacetyl, benzoylpropionyl,etc.!, carboxy(lower)alkanoyl e.g. oxalo, carboxyacetyl,3-carboxypropionyl, 3-carboxybutyryl, 4-carboxybutyryl,4-carboxyvaleryl, etc.!, esterified carboxy(lower)alkanoyl, for example,lower alkoxycarbonyl(lower)alkanoyl e.g. methoxycarbonylacetyl,ethoxycarbonylacetyl, methoxycarbonylpropionyl, ethoxycarbonylpropionyl,etc.!, carbamoyl(lower)alkanoyl e.g. carbamoylacetyl,carbamoylpropionyl, etc.!, lower alkylcarbamoyl(lower)alkanoyl e.g.methylcarbamoylacetyl, methylcarbamoylpropionyl,ethylcarbamoylpropionyl, dimethylcarbamoylpropionyl,(N-methyl-N-ethylcarbamoyl)propionyl, etc.!, ar(lower)alkanoyl e.g.phenylacetyl, tolylacetyl, naphthylacetyl, 2-phenylpropionyl,3-phenylpropionyl, 4-phenylbutyryl, tritylcarbonyl, etc.!, optionallysubstituted heterocyclic(lower)alkanoyl e.g. morpholinoacetyl,thiomorpholinoacetyl, morpholinopropionyl, thiomorpholinopropionyl,piperidinopropionyl, piperazinylpropionyl, pyridylacetyl,pyrrolidinylpropionyl, imidazolidinylpropionyl, piperidinoacetyl,pyrrolidinylacetyl, hexamethyleneiminoacetyl,hexamethyleneiminopropionyl, imidazolylacetyl, furylacetyl,thienylacetyl, methylpiperazinylacetyl, pyridylpiperazinylacetyl, etc.!,heterocyclicthio(lower)alkanoyl e.g. pyridylthioacetyl,pyrimidinylthioacetyl, imidazolylthiopropionyl, etc.!, etc., loweralkenoyl e.g. acryloyl, crotonoyl, isocrotonoyl, 3-butenoyl,3-pentenoyl, 4-pentenoyl, methacryloyl, etc.!, lower alkynoyl e.g.propioloyl, 2-butynoyl, 3-butynoyl, etc.!, cyclo(lower)alkylcarbonyle.g. cyclopropylcarbonyl, cyclobutylcarbonyl, cyclopentylcarbonyl,cyclohexylcarbonyl, etc.!, cyclo(lower)alkenylcarbonyl e.g.cyclopentenylcarbonyl, cyclohexenylcarbonyl, etc.!, carboxy, esterifiedcarboxy such as lower alkoxycarbonyl e.g. methoxycarbonyl,ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl,isobutoxycarbonyl, tert-butoxycarbonyl, pentyloxycarbonyl,hexyloxycarbonyl, etc.!, aryloxycarbonyl e.g. phenoxycarbonyl, etc.!,etc., substituted or unsubstituted aroyl such as aroyl e.g. benzoyl,toluoyl, xyloyl, naphthoyl, etc.!, lower alkoxyaroyl e.g.methoxybenzoyl, etc.!, haloaroyl e.g. chlorobenzoyl, fluorobenzoyl,etc.), acylamoyl, for example, lower alkoxycarbonylaroyl e.g.methoxycarbonylbenzoyl, etc.!, etc., substituted or unsubstitutedar(lower)alkenoyl such as ar(lower)alkenoyl e.g. cinnamoyl,allocinnamoyl, a-methylcinnamoyl, 4-methylcinnamoyl, etc.!, loweralkoxy-ar(lower)alkenoyl e.g. methoxycinnamoyl, ethoxycinnamoyl,dimethoxycinnamoyl, etc.!, lower alkylenedioxy-ar(lower)alkenoyl e.g.methylenedioxycinnamoyl, ethylenedioxycinnamoyl, etc.!,nitro-ar(lower)alkenoyl e.g. nitrocinnamoyl, etc.!,cyano-ar(lower)alkenoyl e.g. cyanocinnamoyl, etc.!,halo-ar(lower)alkenoyl e.g. chlorocinnamoyl, fluorocinnamoyl, etc.!,hydroxy-ar(lower)alkenoyl e.g. hydroxycinnamoyl, etc.!,hydroxy(lower)alkoxy-ar(lower)alkenoyl e.g. hydroxymethoxycinnamoyl,hydroxyethoxycinnamoyl, etc.!, amino(lower)alkoxy-ar(lower)alkenoyl e.g.aminoethoxycinnamoyl, etc.!, loweralkylamino(lower)alkoxy-ar(lower)alkenoyl e.g.methylaminomethoxycinnamoyl, dimethylaminoethoxycinnamoyl, etc.!,heterocyclic(lower)alkoxy-ar(lower)alkenoyl e.g.pyridylmethoxycinnamoyl, etc.!, optionally substitutedheterocyclic-ar(lower)alkenoyl e.g. morpholinocinnamoyl,methylpiperazinylcinnamoyl, pyrrolidinylcinnamoyl,oxopyrrolidinylcinnamoyl, oxopiperidinocinnamoyl,dioxopyrrolidinylcinnamoyl, oxooxazolidinylcinnamoyl, pyrrolylcinnamoyl,tetrazolylcinnamoyl, etc.!, amino-ar(lower)alkenoyl e.g. aminocinnamoyl,etc.!, lower alkylamino-ar(lower)alkenoyl e.g. methylaminocinnamoyl,dimethylaminocinnamoyl, etc.!, acylamino-ar(lower)alkenoyl, for example,lower alkanoylamino-ar(lower)alkenoyl e.g. acetylaminocinnamoyl,propionylaminocinnamoyl, isobutyrylaminocinnamoyl, etc.!,cycloalkyl(lower)alkanoylamino-ar(lower)alkenoyl e.g.cyclopentylacetylaminocinnamoyl, cyclohexylacetylaminocinnamoyl,adamantylacetylaminocinnamoyl, etc.!,cycloalkylcarbonylamino-ar(lower)alkenoyl e.g.cyclopropylcarbonylaminocinnamoyl, cyclopentylcarbonylaminocinnamoyl,cyclohexylcarbonylaminocinnamoyl, adamantylcarbonylaminocinnamoyl,etc.!, lower alkenoylamino-ar(lower)alkenoyl e.g.acryloylaminocinnamoyl, crotonoylaminocinnamoyl, etc.!, loweralkoxycarbonylamino-ar(lower)alkenoyl e.g.methoxycarbonylaminocinnamoyl, ethoxycarbonylaminocinnamoyl, etc.!,hydroxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.hydroxyacetylaminocinnamoyl, hydroxypropionylaminocinnamoyl, etc.!,lower alkoxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.methoxyacetylaminocinnamoyl, methoxypropionylaminocinnamoyl, etc.!,halo(lower)alkanoylamino-ar(lower)alkenoyl e.g.chloroacetylaminocinnamoyl, bromobutyrylaminocinnamoyl,trifluoroacetylaminocinnamoyl, etc.!,amino(lower)alkanoylamino-ar(lower)alkenoyl e.g.aminoacetylaminocinnamoyl, aminopropionylaminocinnamoyl, etc.!, loweralkylamino(lower)alkanoylamino-ar(lower)alkenoyl e.g.methylaminoacetylaminocinnamoyl, dimethylaminoacetylaminocinnamoyl,etc.!, lower alkanoylamino(lower)alkanoylamino-ar(lower)alkenoyl e.g.acetylaminoacetylaminocinnamoyl, acetylaminopropionylaminocinnamoyl,etc.!, carboxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.carboxyacetylaminocinnamoyl, carboxypropionylaminocinnamoyl, etc.!,lower alkoxycarbonyl(lower)alkanoylamino-ar(lower)alkenoyl e.g.ethoxycarbonylacetylaminocinnamoyl,ethoxycarbonylpropionylaminocinnamoyl, etc.!, loweralkoxycarbonyl(lower)alkenoylamino-ar(lower)alkenoyl e.g.ethoxycarbonylacryloylaminocinnamoyl, etc.!,halo(lower)alkoxycarbonylamino-ar(lower)alkenoyl e.g.chloroethoxycarbonylaminocinnamoyl, etc.!, optionally substitutedheterocyclic(lower)alkanoylamino-ar(lower)alkenoyl e.g.pyridylacetylaminocinnamoyl, thienylacetylaminocinnamoyl,methylpyrrolylacetylaminocinnamoyl, etc.!, aroylamino-ar(lower)alkenoyle.g. benzoylaminocinnamoyl, etc.!, optionally substitutedheterocycliccarbonylamino-ar(lower)alkenoyl e.g.pyridylcarbonylaminocinnamoyl, morpholinocarbonylaminocinnamoyl,furylcarbonylaminocinnamoyl, thienylcarbonylaminocinnamoyl,oxazolylcarbonylaminocinnamoyl, methyloxazolylcarbonylaminocinnamoyl,dimethylisoxazolylcarbonylaminocinnamoyl,imidazolylcarbonylaminocinnamoyl,methylimidazolylcarbonylaminocinnamoyl, piperidylcarbonylaminocinnamoyl,ethylpiperidylcarbonylaminocinnamoyl,acetylpiperidylcarbonylaminocinnamoyl,pyrrolidinylcarbonylaminocinnamoyl,acetylpyrrolidinylcarbonylaminocinnamoyl,tert-butoxycarbonylpyrrolidinylcarbonylaminocinnamoyl, etc.!, loweralkylsulfonylamino-ar(lower)alkenoyl e.g. mesylaminocinnamoyl,ethylsulfonylaminocinnamoyl, etc.!, etc., N-(lower alkanoyl)-N-(loweralkyl)amino-ar(lower)alkenoyl e.g. N-acetyl-N-methylaminocinnamoyl,N-acetyl-N-ethylaminocinnamoyl, N-propionyl-N-methylaminocinnamoyl,etc.!, N- lower alkoxy(lower)alkanoyl!-N-(loweralkyl)amino-ar(lower)alkenoyl e.g.N-methoxyacetyl-N-methylaminocinnamoyl,N-methoxypropionyl-N-methylaminocinnamoyl, etc.!, N-(lower alkanoyl)-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-pyridylmethylaminocinnamoyl, etc.!, N-(lower alkanoyl)-N-lower alkoxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-methoxyethylaminocinnamoyl,N-acetyl-N-methoxymethylaminocinnamoyl,N-propionyl-N-methoxyethylaminocinnamoyl, etc.!, N-(lower alkanoyl)-N-lower alkoxycarbonyl(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-tert-butoxycarbonylmethylaminocinnamoyl,N-acetyl-N-tert-butoxycarbonylethylaminocinnamoyl,N-propionyl-N-tert-butoxycarbonylmethylaminocinnamoyl, etc.!, N-(loweralkanoyl)-N- carboxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-carboxymethylaminocinnamoyl,N-acetyl-N-carboxyethylaminocinnamoyl,N-propionyl-N-carboxymethylaminocinnamoyl, etc.!, N- loweralkoxy(lower)alkanoyl!-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-methoxyacetyl-N-pyridylmethylaminocinnamoyl,N-methoxypropionyl-N-pyridylmethylaminocinnamoyl, etc.!, N-heterocycliccarbonyl!-N- loweralkoxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-pyridylcarbonyl-N-methoxymethylaminocinnamoyl,N-pyridylcarbonyl-N-methoxyethylaminocinnamoyl,N-thienylcarbonyl-N-methoxyethylaminocinnamoyl, etc.!,ureido-ar(lower)alkenoyl e.g. ureidocinnamoyl, etc.!, loweralkylureido-ar(lower)alkenoyl e.g. methylureidocinnamoyl,ethylureidocinnamoyl, dimethylureidocinnanoyl, etc.!,heterocyclicureido-ar(lower)alkenoyl e.g. pyridylureidocinnamoyl,pyrimidinylureidocinnamoyl, thienylureidocinnamoyl, etc.!,acyl-ar(lower)alkenoyl, for example, lower alkanoyl-ar(lower)alkenoyle.g. formylcinnamoyl, acetylcinnamoyl, propionylcinnamoyl, etc.!,carboxy-ar(lower)alkenoyl e.g. carboxycinnamoyl, etc.!, loweralkoxycarbonyl-ar(lower)alkenoyl e.g. methoxycarbonylcinnamoyl,ethoxycarbonylcinnamoyl, etc.!, carbamoyl-ar(lower)alkenoyl e.g.carbamoylcinnamoyl, etc.!, lower alkylcarbamoyl-ar(lower)alkenoyl e.g.methylcarbamoylcinnamoyl, ethylcarbamoylcinnamoyl,dimethylcarbamoylcinnamoyl, propylcarbamoylcinnamoyl,isopropylcarbamoylcinnamoyl, diethylcarbamoylcinnamoyl,N-methyl-N-ethylcarbamoylcinnamoyl, etc.!,hydroxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.hydroxyethylcarbamoylcinnamoyl, bis(hydroxyethyl)carbamoylcinnamoyl,etc.!, N- hydroxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-hydroxyethyl-N-methylcarbamoylcinnamoyl, etc.!, loweralkoxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methoxymethylcarbamoylcinnamoyl, methoxyethylcarbamoylcinnamoyl,bis(methoxyethyl)carbamoylcinnamoyl, ethoxyethylcarbamoylcinnamoyl,methoxypropylcarbamoylcinnamoyl, bis(ethoxyethyl)carbamoylcinnamoyl,etc.!, N- lower alkoxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-methoxyethyl-N-methylcarbamoylcinnamoyl,N-ethoxyethyl-N-methylcarbamoylcinnamoyl, etc.!,heterocyclic(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.pyridylmethylcarbamoylcinnamoyl, furylmethylcarbamoylcinnamoyl,thienylmethylcarbamoylcinnamoyl, etc.!, N-heterocyclic(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyle.g. N-pyridylmethyl-N-methylcarbamoylcinnamoyl, etc.!,heterocycliccarbamoyl-ar(lower)alkenoyl e.g.morpholinylcarbamoylcinnamoyl, thienylcarbamoylcinnamoyl,pyridylcarbamoylcinnamoyl, pyrimidinylcarbamoylcinnamoyl,tetrazolylcarbamoylcinnamoyl, etc.!, optionally substitutedheterocycliccarbonyl-ar(lower)alkenoyl e.g. morpholinocarbonylcinnamoyl,pyrrolidinylcarbonylcinnamoyl, piperidinocarbonylcinnamoyl,tetrahydropyridylcarbonylcinnamoyl, methylpiperazinylcarbonylcinnamoyl,etc.!, lower alkenylcarbamoyl-ar(lower)alkenoyl e.g.vinylcarbamoylcinnamoyl, allylcarbamoylcinnamoyl,methylpropenylcarbamoylcinnamoyl, etc.!, loweralkynylcarbamoyl-ar(lower)alkenoyl e.g. ethynylcarbamoylcinnamoyl,propynylcarbamoylcinnamoyl, etc.!,amino(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.aminomethylcarbamoylcinnamoyl, aminoethylcarbamoylcinnamoyl, etc.!,lower alkylamino(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methylaminomethylcarbamoylcinnamoyl, methylaminoethylcarbamoylcinnamoyl,ethylaminoethylcarbamoylcinnanoyl, dimethylaminoethylcarbamoylcinnamoyl,etc.!, lower alkylcarbamoyloxy(lower)alkylcarbamoyl-ar(lower)alkenoyle.g. methylcarbamoyloxymethylcarbamoylcinnamoyl,methylcarbamoyloxyethylcarbamoylcinnamoyl,ethylcarbamoyloxyethylcarbamoylcinnamoyl,dimethylcarbamoyloxyethylcarbamoylcinnamoyl, etc.!, loweralkylcarbamoyl(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methylcarbamoylmethylcarbamoylcinnamoyl,methylcarbamoylethylcarbamoylcinnamoyl,ethylcarbamoylethylcarbamoylcinnamoyl,dimethylcarbamoylethylcarbamoylcinnamoyl, etc.!, loweralkoxycarbonyl(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methoxycarbonylmethylcarbamoylcinnamoyl,methoxycarbonylethylcarbamoylcinnamoyl,ethoxycarbonylmethylcarbamoylcinnamoyl,ethoxycarbonylethylcarbamoylcinnamoyl, etc.!,carboxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.carboxymethylcarbamoylcinnamoyl, carboxyethylcarbamoylcinnamoyl, etc.!,lower alkylcarbamoyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.(methylcarbamoyl-phenethyl)carbamoylcinnamoyl,(ethylcarbamoyl-phenethyl)carbamoylcinnamoyl, etc.!, loweralkoxycarbonyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.(methoxycarbonyl-phenethyl)carbamoylcinnamoyl,(ethoxycarbonyl-phenethyl)carbamoylcinnamoyl, etc.!,carboxy-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.carboxy-phenethyl)carbamoylcinnamoyl, etc.!, N- loweralkylcarbamoyl(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyle.g. N-(methylcarbamoylmethyl)-N-methylcarbamoylcinnamoyl,N-(methylcarbamoylethyl)-N-methylcarbamoylcinnamoyl,N-(ethylcarbamoylethyl)-N-methylcarbamoylcinnamoyl,N-(dimethylcarbamoylethyl)-N-methylcarbamoylcinnamoyl, etc.!, N- loweralkoxycarbonyl(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyle.g. N-methoxycarbonylmethyl-N-methylcarbamoylcinnamoyl,N-methoxycarbonylethyl-N-methylcarbamoylcinnamoyl,N-ethoxycarbonylmethyl-N-methylcarbamoylcinnamoyl,N-ethoxycarbonylethyl-N-methylcarbamoylcinnamoyl, etc.!, N-carboxy(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyl e.g.N-carboxymethyl-N-methylcarbamoylcinnamoyl,N-carboxyethyl-N-methylcarbamoylcinnamoyl, etc.!,arylcarbamoyl-ar(lower)alkenoyl e.g. phenylcarbamoylcinnamoyl,naphthylcarbamoylcinnamoyl, etc.!, etc., etc., ar(lower)alkynoyl e.g.phenylpropioloyl, etc.!, substituted or unsubstitutedheterocyclic(lower)alkenoyl such as heterocyclic(lower)alkenoyl e.g.morpholinylacryloyl, pyridylacryloyl, thienylacryloyl, etc.!,amino-heterocyclic(lower)alkenoyl e.g. aminopyridylacryloyl, etc.!,lower alkylamino-heterocyclic(lower)alkenoyl e.g.methylaminopyridylacryloyl, dimethylaminopyridylacryloyl, etc.!,acylamino-heterocyclic(lower)alkenoyl, for example, loweralkanoylamino-heterocyclic(lower)alkenoyl e.g.acetylaminopyridylacryloyl, propionylaminopyridylacryloyl, etc.!, loweralkenoylamino-heterocyclic(lower)alkenoyl e.g.acryloylaminopyridylacryloyl, crotonoylaminopyridylacryloyl, etc.!,heterocyclic(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.pyridylacetylaminopyridylacryloyl, thienylacetylaminopyridylacryloyl,etc.!, heterocycliccarbonylamino-heterocyclic(lower)alkenoyl e.g.pyridylcarbonylaminopyridylacryloyl, furylcarbonylaminopyridylacryloyl,etc.!, loweralkanoylamino(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.acetylaminoacetylaminopyridylacryloyl,acetylaminopropionylaminopyridylacryloyl, etc.!, loweralkoxycarbonyl(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.ethoxycarbonylacetylaminopyridylacryloyl,ethoxycarbonylpropionylaminopyridylacryloyl, etc.!, loweralkoxy(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.methoxyacetylaminopyridylacryloyl, methoxypropionylaminopyridylacryloyl,ethoxypropionylaminopyridylacryloyl, etc.!, etc., loweralkylureido-heterocyclic(lower)alkenoyl e.g.methylureidopyridylacryloyl, etc.!, acyl-heterocyclic(lower)alkenoyl,for example, carboxy-heterocyclic(lower)alkenoyl e.g.carboxypyridylacryloyl, etc.!, loweralkoxycarbonyl-heterocyclic(lower)alkenoyl e.g.ethoxycarbonylpyridylacryloyl, etc.!, loweralkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.methylcarbamoylpyridylacryloyl, ethylcarbamoylpyridylacryloyl,dimethylcarbamoylpyridylacryloyl, diethylcarbamoylpyridylacryloyl,isopropylcarbamoylpyridylacryloyl,N-ethyl-N-methylcarbamoylpyridylacryloyl, etc.!, loweralkoxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.methoxymethylcarbamoylpyridylacryloyl,methoxyethylcarbamoylpyridylacryloyl,methoxypropylcarbamoylpyridylacryloyl,ethoxyethylcarbamoylpyridylacryloyl,bis(methoxyethyl)carbamoylpyridylacryloyl, etc.!,hydroxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.hydroxymethylcarbamoylpyridylacryloyl,hydroxyethylcarbamoylpyridylacryloyl,bis(hydroxyethyl)carbamoylpyridylacryloyl, etc.!,heterocycliccarbamoyl-heterocyclic(lower)alkenoyl e.g.pyridylcarbamoylpyridylacryloyl, morpholinylcarbamoylpyridylacryloyl,thienylcarbamoylpyridylacryloyl, pyrimidinylcarbamoylpyridylacryloyl,etc.!, heterocyclic(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyle.g. pyridylmethylcarbamoylpyridylacryloyl,furylmethylcarbamoylpyridylacryloyl,thienylmethylcarbamoylpyridylacryloyl, etc.!,heterocycliccarbonyl-heterocyclic(lower)alkenoyl e.g.morpholinocarbonylpyridylacryloyl, pyrrolidinylcarbonylpyridylacryloyl,piperidinocarbonylpyridylacryloyl, etc.3, loweralkenylcarbamoyl-heterocyclic(lower)alkenoyl e.g.vinylcarbamoylpyridylacryloyl, allylcarbamoylpyridylacryloyl, etc.!,lower alkynylcarbamoyl-heterocyclic(lower)alkenoyl e.g.ethynylcarbamoylpyridylacryloyl, propynylcarbamoylpyridylacryloyl,etc.!, etc., etc., heterocycliccarbonyl which may be substituted withsubstituent e.g. furoyl, thenoyl, nicotinoyl, isonicotinoyl,morpholinocarbonyl, piperidinocarbonyl, 4-methyl-1-piperazinylcarbonyl,4-ethyl-1-piperazinylcarbonyl, dimethylaminopiperidinocarbonyl,4-methylcarbamoyl-1-piperazinylcarbonyl,1,2,3,6-tetrahydropyridylcarbonyl, pyrrolidinylcarbonyl,indolylcarbonyl, etc.!, aryloxycarbonyl which may be substituted withnitro e.g. phenyloxycarbonyl, nitrophenyloxycarbonyl, etc.!,ar(lower)alkoxycarbonyl which may be substituted with nitro e.g.benzyloxycarbonyl, nitrobenzyloxycarbonyl, etc.!, substituted orunsubstituted carbamoyl or thiocarbamoyl such as carbamoyl, loweralkylcarbamoyl e.g. methylcarbamoyl, ethylcarbamoyl, propylcarbamoyl,isopropylcarbamoyl, butylcarbamoyl, isobutylcarbamoyl,tert-butylcarbamoyl, pentylcarbamoyl, dimethylcarbamoyl,diethylcarbamoyl, N-ethyl-N-methylcarbamoyl, etc.!,carboxy(lower)alkylcarbamoyl e.g. carboxymethylcarbamoyl,carboxyethylcarbamoyl, etc.!, esterified carboxy(lower)alkylcarbamoyl,for example, lower alkoxycarbonyl(lower)alkylcarbamoyl e.g.methoxycarbonylmethylcarbamoyl, ethoxycarbonylmethylcarbamoyl,ethoxycarbonylethylcarbamoyl, etc.!, lower alkenylcarbamoyl e.g.vinylcarbamoyl, allylcarbamoyl, etc.!, cyclo(lower)alkylcarbamoyl e.g.cyclopropylcarbamoyl, cyclobutylcarbamoyl, cyclopentylcarbamoyl,cyclohexylcarbamoyl, etc.!, halo(lower)alkanoylcarbamoyl e.g.trichloroacetylcarbamoyl, etc.!, substituted or unsubstitutedarylcarbamoyl, for example, arylcarbamoyl e.g. phenylcarbamoyl,tolylcarbamoyl, xylylcarbamoyl, naphthylcarbamoyl, ethylphenylcarbamoyl,etc.!, arylthiocarbamoyl e.g. phenylthiocarbamoyl, etc.!, loweralkoxy-arylcarbamoyl e.g. methoxyphenylcarbamoyl, etc.!,halo-arylcarbamoyl e.g. fluorophenylcarbamoyl, chlorophenylcarbamoyl,etc.!, halo(lower)alkyl-arylcarbamoyl e.g.trifluoromethylphenylcarbamoyl, etc.!, nitro-arylcarbamoyl e.g.nitrophenylcarbamoyl, etc.!, cyano-arylcarbamoyl e.g.cyanophenylcarbamoyl, etc.!, hydroxy(lower)alkyl-arylcarbamoyl e.g.hydroxymethylphenylcarbamoyl, hydroxyethylphenylcarbamoyl, etc.!,amino-arylcarbamoyl e.g. aminophenylcarbamoyl, etc.!, loweralkylamino-arylcarbamoyl e.g. methylaminophenylcarbamoyl,ethylaminophenylcarbamoyl, dimethylaminophenylcarbamoyl, etc.!, loweralkanoylamino-arylcarbamoyl e.g. acetylaminophenylcarbamoyl,propionylaminophenylcarbamoyl, etc.!, N-(lower alkanoyl)-N-(loweralkyl)amino-arylcarbamoyl e.g. N-acetyl-N-methylaminophenylcarbamoyl,N-propionyl-N-methylaminophenylcarbamoyl, etc.!, loweralkoxy(lower)alkanoylamino-arylcarbamoyl e.g.methoxyacetylaminophenylcarbamoyl, methoxypropionylaminophenylcarbamoyl,etc.!, lower alkoxycarbonyl(lower)alkanoylamino-arylcarbamoyl e.g.ethoxycarbonylacetylaminophenylcarbamoyl,methoxycarbonylpropionylaminophenylcarbamoyl, etc.!,carboxyamino-arylcarbamoyl e.g. carboxyaminophenylcarbamoyl, etc.!,lower alkoxycarbonylamino-arylcarbamoyl e.g.ethoxycarbonylaminophenylcarbamoyl, etc.!, aroylamino-arylcarbamoyl e.g.benzoylaminophenylcarbamoyl, etc.!,heterocycliccarbonylamino-arylcarbamoyl e.g.pyridylcarbonylaminophenylcarbamoyl, furylcarbonylaminophenylcarbamoyl,morpholinocarbonylaminophenylcarbamoyl, etc.!,heterocyclic(lower)alkanoylamino-arylcarbamoyl e.g.pyridylacetylaminophenylcarbamoyl, thienylacetylaminophenylcarbamoyl,etc.!, ureido-arylcarbamoyl e.g. ureidophenylcarbamoyl, etc.!, loweralkylureido-arylcarbamoyl e.g. methylureidophenylcarbamoyl,ethylureidophenylcarbamoyl, etc.!,hydroxyimino(lower)alkyl-arylcarbamoyl e.g.hydroxyiminoethylphenylcarbamoyl, etc.!, loweralkoxyimino(lower)alkyl-arylcarbamoyl e.g.methoxyiminoethylphenylcarbamoyl, etc.!, loweralkylhydrazono(lower)alkyl-arylcarbamoyl e.g.methylhydrazonoethylphenylcarbamoyl,dimethylhydrazonoethylphenylcarbamoyl, etc.!, optionally substitutedheterocyclic-arylcarbamoyl e.g. oxopyrrolidinylphenylcarbamoyl,oxopiperidinophenylcarbamoyl, dioxopyrrolidinylphenylcarbamoyl,oxooxazolidinylphenylcarbamoyl, pyrrolylphenylcarbamoyl, etc.!,acyl-arylcarbamoyl, for example, carboxy-arylcarbamoyl e.g.carboxyphenylcarbamoyl, etc.!, lower alkoxycarbonyl-arylcarbamoyl e.g.ethoxycarbonylphenylcarbamoyl, etc.!, heterocycliccarbonyl-arylcarbamoyle.g. morpholinocarbonylphenylcarbamoyl,pyrrolidinylcarbonylphenylcarbamoyl, piperidinocarbonylphenylcarbamoyl,1,2,3,6-tetrahydropyridylcarbonylphenylcarbamoyl,piperazinylcarbonylphenylcarbamoyl,thiomorpholinocarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with lower alkyl e.g.methylpiperazinylcarbonylphenylcarbamoyl,ethylpiperazinylcarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with aryl e.g.phenylpiperazinylcarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with a heterocyclic groupe.g. pyridylpiperazinylcarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with lower alkanoyl e.g.acetylpiperazinylcarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with lower alkoxycarbonyle.g. ethoxycarbonylpiperazinylcarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with lower alkylaminoe.g. methylaminopiperazinylcarbonylphenylcarbamoyl,dimethylaminopiperidinocarbonylphenylcarbamoyl, etc.!,heterocycliccarbonyl-arylcarbamoyl substituted with lower alkylcarbamoyle.g. methylcarbamoylpiperazinylcarbonylphenylcarbamoyl, etc.!,carbamoyl-arylcarbamoyl e.g. carbamoylphenylcarbamoyl, etc.!, loweralkylcarbamoyl-arylcarbamoyl e.g. methylcarbamoylphenylcarbamoyl,ethylcarbamoylphenylcarbamoyl, propylcarbamoylphenylcarbamoyl,dimethylcarbamoylphenylcarbamoyl, diethylcarbamoylphenylcarbamoyl,N-ethyl-N-methylcarbamoylphenylcarbamoyl,N-isopropyl-N-methylcarbamoylphenylcarbamoyl, etc.!,hydroxy(lower)alkylcarbamoyl-arylcarbamoyl e.g.hydroxymethylcarbamoylphenylcarbamoyl,hydroxyethylcarbamoylphenylcarbamoyl,bis(hydroxyethyl)carbamoylphenylcarbamoyl, etc.!, N-hydroxy(lower)alkyl!-N-(lower alkyl)carbamoyl-arylcarbamoyl e.g.N-(hydroxyethyl)-N-methylcarbamoylphenylcarbamoyl, etc.!, loweralkoxy(lower)alkylcarbamoyl-arylcarbamoyl e.g.methoxymethylcarbamoylphenylcarbamoyl,methoxyethylcarbamoylphenylcarbamoyl,ethoxyethylcarbamoylphenylcarbamoyl,bis(methoxyethyl)carbamoylphenylcarbamoyl,bis(ethoxyethyl)carbamoylphenylcarbamoyl, etc.!, N- loweralkoxy(lower)alkyl!-N-(lower alkyl)carbamoyl-arylcarbamoyl e.g.N-(methoxyethyl)-N-methylcarbamoylphenylcarbamoyl,N-(methoxypropyl)-N-methylcarbamoylphenylcarbamoyl, etc.!, loweralkylamino(lower)alkylcarbamoyl-arylcarbamoyl e.g.methylaminoethylcarbamoylphenylcarbamoyl,dimethylaminoethylcarbamoylphenylcarbamoyl, etc.!, N- loweralkylamino(lower)alkyl!-N-(lower alkyl)carbamoyl-arylcarbamoyl e.g.N-(dimethylaminoethyl)-N-methylcarbamoylphenylcarbamoyl,N-(dimethylaminopropyl)-N-methylcarbamoylphenylcarbamoyl, etc.!,heterocycliccarbamoyl-arylcarbamoyl e.g.morpholinylcarbamoylphenylcarbamoyl, thienylcarbamoylphenylcarbamoyl,pyridylcarbamoylphenylcarbamoyl, pyrimidinylcarbamoylphenylcarbamoyl,etc.!, N-(heterocyclic)-N-(lower alkyl)carbamoyl-arylcarbamoyl e.g.N-pyridyl-N-methylcarbamoylphenylcarbamoyl, etc.!,heterocyclic(lower)alkylcarbamoyl-arylcarbamoyl e.g.pyridylmethylcarbamoylphenylcarbamoyl,pyridylethylcarbamoylphenylcarbamoyl,thienylmethylcarbamoylphenylcarbamoyl, etc.!, N-heterocyclic(lower)alkyl!-N-(lower alkyl)carbamoyl-arylcarbamoyl e.g.N-pyridylmethyl-N-methylcarbamoylphenylcarbamoyl, etc.!, N-heterocyclic(lower)alkyl!-N- loweralkoxy(lower)alkyl!carbamoyl-arylcarbamoyl e.g.N-pyridylmethyl-N-methoxyethylcarbamoylphenylcarbamoyl, etc.!arylcarbamoyl-arylcarbamoyl e.g. phenylcarbamoylphenylcarbamoyl, etc.!,lower alkylamino-arylcarbamoyl-arylcarbamoyl e.g.dimethylaminophenylcarbamoylphenylcarbamoyl, etc.!, loweralkanoyl-arylcarbamoyl e.g. acetylphenylcarbamoyl,propionylphenylcarbamoyl, etc.!, etc., etc., ar(lower)alkylcarbamoyle.g. benzylcarbamoyl, phenethylcarbamoyl, etc.!, heterocycliccarbamoyle.g. furylcarbamoyl, thienylcarbamoyl, pyridylcarbamoyl,quinolylcarbamoyl, isoquinolylcarbamoyl, pyrimidinylcarbamoyl,pyrazolylcarbamoyl, etc.!, heterocyclic(lower)alkylcarbamoyl e.g.pyridylmethylcarbamoyl, pyridylethylcarbamoyl, furylmethylcarbamoyl,thienylmethylcarbamoyl, etc.!, arylaminocarbamoyl e.g.phenylaminocarbamoyl, etc.!, aroylcarbamoyl e.g. benzoylcarbamoyl,etc.!, etc., lower alkylsulfonyl e.g. mesyl, ethylsulfonyl,propylsulfonyl, isopropylsulfonyl, tert-butylsulfonyl, pentylsulfonyl,etc.!, arylsulfonyl e.g. tosyl, phenylsulfonyl, etc.!,ar(lower)alkylsulfonyl e.g. benzylsulfonyl, phenethylsulfonyl, etc.!,ar(lower)alkenylsulfonyl e.g. styrylsulfonyl, cinnam-ylsulfonyl, etc.!,phthaloyl, substituted or unsubstituted amino acid residue mentionedbelow, or the like.

Suitable "amino acid residue" may include natural or artificial ones,and such amino acid may be glycine, sarcosine, alanine, β-alanine,valine, norvaline, leucine, isoleucine, norleucine, serine, threonine,cysteine, methionine, phenylalanine, phenylglycine, tryptophan,tyrosine, proline, hydroxyproline, glutamic acid, aspartic acid,glutamine, asparagine, lysine, arginine, histidine, ornithine, or thelike, in which more preferable one is glycine, sarcosine, alanine,β-alanine and proline, and the most preferable one is glycine. And saidamino acid residue may be substituted with suitable substituent(s) suchas the above-mentioned lower alkyl, the above-mentioned aryl, theabove-mentioned acyl, ar(lower)alkyl e.g. benzyl, phenethyl, trityl,etc.!, cycloalkyl e.g. cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl,cycloheptyl, cyclooctyl, adamantyl, etc.!, a heterocyclic groupmentioned below, heterocyclic(lower)alkyl e.g. pyridylmethyl,pyridylethyl, imidazolylmethyl, furylmethyl, thienylmethyl,morpholinomethyl, piperidinomethyl, etc.!, substituted or unsubstitutedamidino e.g. amidino, methylamidino, N-ethyl-N'-cyanoamidino, etc.!, orthe like.

Preferred example of said amino acid residue substituted with suitablesubstituent(s) may be amino acid residue substituted with lower alkyle.g. ethylglycyl, isopropylglycyl, dimethylglycyl, diethylglycyl,ethylsarcosyl, isopropylsarcosyl, methylalanyl, methyl-β-alanyl,dimethyl-β-alanyl, etc.!, amino acid residue substituted with aryl e.g.N-phenylglycyl, N-tolylglycyl, N-phenylalanyl, N-phenylsarcosyl, etc.!,amino acid residue substituted with ar(lower)alkyl e.g. benzylglycyl,tritylglycyl, phenethylglycyl, benzylsarcosyl, benzylalanyl, etc.!,amino acid residue substituted with a heterocyclic group e.g.morpholinoglycyl, piperidinoglycyl, pyridylglycyl, etc.!, amino acidresidue substituted with heterocyclic(lower)alkyl e.g.pyridylmethylglycyl, imidazolylmethylglycyl, furylmethylglycyl,thienylmethylglycyl, etc.!, amino acid residue substituted withcycloalkyl e.g. cyclopropylglycyl, cyclobutylglycyl, cyclopentylglycyl,cyclohexylglycyl, cycloheptylglycyl, cyclooctylglycyl, adamantylglycyl,cyclohexylsarcosyl, cycloheptylsarcosyl, cyclohexylalanyl, etc.!, aminoacid residue substituted with optionally substituted amidino e.g.amidinoglycyl, methylamidinoglycyl, N-ethyl-N'-cyanoamidinoglycyl,etc.!, amino acid residue substituted with acyl such as amino acidresidue substituted with alkanoyl e.g. formylglycyl, acetylglycyl,acetylsarcosyl, acetylalanyl, acetyl-β-alanyl, propionylglycyl,butyrylglycyl, isobutyrylglycyl, valerylglycyl, isovalerylglycyl,pivaloylglycyl, hexanoylglycyl, heptanoylglycyl, etc.!, amino acidresidue substituted with halo(lower)alkanoyl e.g. trifluoroacetylglycyl,trifluoroacetylsarcosyl, trifluoroacetylalanyl, bromoacetylglycyl,heptafluorobutyrylglycyl, etc.!, amino acid residue substituted withhydroxy(lower)alkanoyl e.g. glycoloylglycyl, glycoloylsarcosyl,lactoylglycyl, lactoylalanyl, etc.!, amino acid residue substituted withlower alkylsulfonyloxy(lower)alkanoyl e.g. mesyloxyacetylglycyl,ethylsulfonyloxyacetylglycyl, mesyloxyacetylsarcosyl, etc.!, amino acidresidue substituted with lower alkoxy(lower)alkanoyl e.g.methoxyacetylglycyl, ethoxyacetylglycyl, methoxyacetylsarcosyl,methoxypropionylalanyl, etc.!, amino acid residue substituted witharyloxy(lower)alkanoyl e.g. phenyloxyacetylglycyl,phenyloxypropionylglycyl, phenyloxyacetylsarcosyl, etc.!, amino acidresidue substituted with lower alkylthio(lower)alkanoyl e.g.methylthioacetylglycyl, methylthiopropionylglycyl, etc.!, amino acidresidue substituted with lower alkylcarbamoyl(lower)alkanoyl e.g.methylcarbamoylpropionylglycyl, methylcarbamoylpropionylalanyl, etc.!,amino acid residue substituted with lower alkanoyloxy(lower)alkanoyle.g. acetyloxyacetylglycyl, acetyloxyacetylsarcosyl,propionyloxyacetylglycyl, acetyloxypropionylalanyl, etc.!, amino acidresidue substituted with carboxy(lower)alkanoyl e.g.carboxyacetylglycyl, carboxypropionylglycyl, carboxypropionylsarcosyl,carboxyacetylalanyl, etc.!, amino acid residue substituted with loweralkoxycarbonyl(lower)alkanoyl e.g. methoxycarbonylacetylglycyl,ethoxycarbonylpropionylglycyl, methoxycarbonylacetylsarcosyl, etc.!,amino acid residue substituted with ar(lower)alkanoyl e.g.phenylacetylglycyl, phenylacetylsarcosyl, phenylpropionylalanyl,phenylpropionylglycyl, naphthylacetylglycyl, phenylbutyrylglycyl, etc.!,amino acid residue substituted with optionally substitutedheterocyclic(lower)alkanoyl e.g. morpholinoacetylglycyl,thiomorpholinoacetylglycyl, its oxide or dioxide, pyridylacetylglycyl,morpholinopropionylalanyl, imidazolylacetylglycyl,piperidinoacetylglycyl, pyrrolidinylacetylglycyl,hexamethyleneiminoacetylglycyl, methylpiperazinylacetylglycyl,pyridylpiperazinylacetylglycyl, etc.!, amino acid residue substitutedwith lower alkenoyl e.g. acryloylglycyl, crotonoylglycyl,3-pentenoylglycyl, 3-butenoylglycyl, 4-pentenoylglycyl,3-butenoylsarcosyl, etc.!, amino acid residue substituted withar(lower)alkenoyl e.g. cinnamoylglycyl, allocinnamoylglycyl,α-methylcinnamoylglycyl, 4-methylcinnamoylglycyl, cinnamoylsarcosyl,etc.!, amino acid residue substituted with loweralkoxy-ar(lower)alkenoyl e.g. methoxycinnamoylglycyl,ethoxycinnamoylglycyl, dimethoxycinnamoylglycyl, etc.!, amino acidresidue substituted with lower alkylenedioxy-ar(lower)alkenoyl e.g.methylenedioxycinnamoylglycyl, ethylenedioxycinnamoylglycyl, etc.!,amino acid residue substituted with nitro-ar(lower)alkenoyl e.g.nitrocinnamoylglycyl, etc.!, amino acid residue substituted withcyano-ar(lower)alkenoyl e.g. cyanocinnamoylglycyl, etc.!, amino acidresidue substituted with halo-ar(lower)alkenoyl e.g.chlorocinnamoylglycyl, fluorocinnamoylglycyl, etc.!, amino acid residuesubstituted with hydroxy-ar(lower)alkenoyl e.g. hydroxycinnamoylglycyl,etc.!, amino acid residue substituted withhydroxy(lower)alkoxy-ar(lower)alkenoyl e.g.hydroxymethoxycinnamoylglycyl, hydroxyethoxycinnamoylglycyl, etc.!,amino acid residue substituted with amino(lower)alkoxy-ar(lower)alkenoyle.g. aminoethoxycinnamoylglycyl, etc.!, amino acid residue substitutedwith lower alkylamino(lower)alkoxy-ar(lower)alkenoyl e.g.methylaminomethoxycinnamoylglycyl, dimethylaminoethoxycinnamoylclycyl,etc.!, amino acid residue substituted withheterocyclic(lower)alkoxy-ar(lower)alkenoyl e.g.pyridylmethoxycinnamoylglycyl, etc.!, amino acid residue substitutedwith optionally substituted heterocyclic-ar(lower)alkenoyl e.g.morpholinocinnamoylglycyl, methylpiperazinylcinnamoylglycyl,pyrrolidinylcinnamoylglycyl, oxopyrrolidinylcinnamoylglycyl,oxopiperidinocinnamoylglycyl, dioxopyrrolidinylcinnamoylglycyl,oxooxazolidinylcinnamoylglycyl, pyrrolylcinnamoylglycyl,tetrazolylcinnamoylglycyl, etc.!, amino acid residue substituted withamino-ar(lower)alkenoyl e.g. aminocinnamoylglycyl, etc.!, amino acidresidue substituted with lower alkylamino-ar(lower)alkenoyl e.g.methylaminocinnamoylglycyl, dimethylaminocinnamoylglycyl, etc.!, aminoacid residue substituted with acylamino-ar(lower)alkenoyl, for example,amino acid residue substituted with loweralkanoylamino-ar(lower)alkenoyl e.g. acetylaminocinnamoylglycyl,propionylaminocinnamoylglycyl, isobutyrylaminocinnamoylglycyl, etc.!,amino acid residue substituted withcycloalkyl(lower)alkanoylamino-ar(lower)alkenoyl (e.g.cyclopentylacetylaminocinnamoylglycyl,cyclohexylacetylaminocinnamoylglycyl,adamantylacetylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with cycloalkylcarbonylamino-ar(lower)alkenoyl (e.g.cyclopropylcarbonylaminocinnamoylglycyl,cyclopentylcarbonylaminocinnamoylglycyl,cyclohexylcarbonylaminocinnamoylglycyl,adamantylcarbonylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with lower alkenoylamino-ar(lower)alkenoyl e.g.acryloylaminocinnamoylglycyl, crotonoylaminocinnamoylglycyl, etc.!,amino acid residue substituted with loweralkoxycarbonylamino-ar(lower)alkenoyl e.g.methoxycarbonylaminocinnamoylglycyl, ethoxycarbonylaminocinnamoylglycyl,etc.!, amino acid residue substituted withhydroxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.hydroxyacetylaminocinnamoylglycyl, hydroxypropionylaminocinnamoylglycyl,etc.!, amino acid residue substituted with loweralkoxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.methoxyacetylaminocinnamoylglycyl, methoxypropionylaminocinnamoylglycyl,etc.!, amino acid residue substituted withhalo(lower)alkanoylamino-ar(lower)alkenoyl e.g.chloroacetylaminocinnamoylglycyl, trifluoroacetylaminocinnamoylglycyl,bromobutyrylaminocinnamoylglycyl, etc.!, amino acid residue substitutedwith amino(lower)alkanoylamino-ar(lower)alkenoyl e.g.aminoacetylaminocinnamoylglycyl, aminopropionylaminocinnamoylglycyl,etc.!, amino acid residue substituted with loweralkylamino(lower)alkanoylamino-ar(lower)alkenoyl e.g.methylaminoacetylaminocinnamoylglycyl,dimethylaminacetylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with loweralkanoylamino(lower)alkanoylamino-ar(lower)alkenoyl e.g.acetylaminoacetylaminocinnamoylglycyl,acetylaminopropionylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with carboxy(lower)alkanoylamino-ar(lower)alkenoyl e.g.carboxyacetylaminocinnamoylglycyl, carboxypropionylaminocinnamoylglycyl,etc.!, amino acid residue substituted with loweralkoxycarbonyl(lower)alkanoylamino-ar(lower)alkenoyl e.g.ethoxycarbonylacetylaminocinnamoylglycyl,ethoxycarbonylpropionylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with loweralkoxycarbonyl(lower)alkenoylamino-ar(lower)alkenoyl e.g.ethoxycarbonylacryloylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with halo(lower)alkoxycarbonylamino-ar(lower)alkenoyl e.g.chloroethoxycarbonylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with optionally substitutedheterocyclic(lower)alkanoylamino-ar(lower)alkenoyl e.g.pyridylacetylaminocinnamoylglycyl, thienylacetylaminocinnamoylglycyl,methylpyrrolylacetylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with aroylamino-ar(lower)alkenoyl e.g.benzoylaminocinnamoylglycyl, etc.!, amino acid residue substituted withoptionally substituted heterocycliccarbonylamino-ar(lower)alkenoyl e.g.pyridylcarbonylaminocinnamoylglycyl,morpholinocarbonylaminocinnamoylglycyl,furylcarbonylaminocinnamoylglycyl, thienylcarbonylaminocinnamoylglycyl,oxazolylcarbonylaminocinnamoylglycyl,methyloxazolylcarbonylaminocinnamoylglycyl,dimethylisoxazolylcarbonylaminocinnamoylglycyl,imidazolylcarbonylaminocinnamoylglycyl,methylimidazolylcarbonylaminocinnamoylglycyl,piperidylcarbonylaminocinnamoylglycyl,ethylpiperidylcarbonylaminocinnamoylglycyl,acetylpiperidylcarbonylaminocinnamoylglycyl,pyrrolidinylcarbonylaminocinnamoylglycyl,acetylpyrrolidinylcarbonylaminocinnamoylglycyl,tert-butoxycarbonylpyrrolidinylcarbonylaminocinnamoylglycyl, etc.!,amino acid residue substituted with loweralkylsulfonylamino-ar(lower)alkenoyl e.g. mesylaminocinnamoylglycyl,ethylsulfonylaminocinnamoylglycyl, etc.!, etc., amino acid residuesubstituted with N-(lower alkanoyl)-N-(loweralkyl)amino-ar(lower)alkenoyl e.g.N-acetyl-N-methylaminocinnamoylglycyl,N-acetyl-N-ethylaminocinnamoylglycyl,N-propionyl-N-methylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with N- lower alkoxy(lower)alkanoyl!-N-(loweralkyl)amino-ar(lower)alkenoyl e.g.N-methoxyacetyl-N-methylaminocinnamoylglycyl,N-methoxypropionyl-N-methylaminocinnamoylglycyl, etc.!, amino acidresidue substituted with N-(lower alkanoyl)-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-pyridylmethylaminocinnamoylglycyl, etc.!, amino acid residuesubstituted with N-(lower alkanoyl)-N- loweralkoxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-methoxyethylaminocinnamoylglycyl,N-acetyl-N-methoxymethylaminocinnamoylglycyl,N-propionyl-N-methoxyethylaminocinnamoylglycyl, etc.!, amino acidresidue substituted with N-(lower alkanoyl)-N- loweralkoxycarbonyl(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-tert-butoxycarbonylmethylaminocinnamoylglycyl,N-acetyl-N-tert-butoxycarbonylethylaminocinnamoylglycyl,N-propionyl-N-tert-butoxycarbonylmethylaminocinnamoylglycyl, etc.!,amino acid residue substituted with N-(lower alkanoyl)-N-carboxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-acetyl-N-carboxymethylaminocinnamoylglycyl,N-acetyl-N-carboxyethylaminocinnamoylglycyl,N-propionyl-N-carboxymethylaminocinnamoylglycyl, etc.!, amino acidresidue substituted with N- lower alkoxy(lower)alkanoyl!-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-methoxyacetyl-N-pyridylmethylaminocinnamoylglycyl,N-methoxypropionyl-N-pyridylmethylaminocinnamoylglycyl, etc.!, aminoacid residue substituted with N- heterocycliccarbonyl!-N- loweralkoxy(lower)alkyl!amino-ar(lower)alkenoyl e.g.N-pyridylcarbonyl-N-methoxymethylaminocinnamoylglycyl,N-pyridylcarbonyl-N-methoxyethylaminocinnamoylglycyl,N-thienylcarbonyl-N-methoxyethylaminocinnamoylglycyl, etc.!, amino acidresidue substituted with ureido-ar(lower)alkenoyl e.g.ureidocinnamoylglycyl, etc.!, amino acid residue substituted with loweralkylureido-ar(lower)alkenoyl e.g. methylureidocinnamoylglycyl,ethylureidocinnamoylglycyl, dimethylureidocinnamoylglycyl, etc.!, aminoacid residue substituted with heterocyclicureido-ar(lower)alkenoyl e.g.pyridylureidocinnamoylglycyl, pyrimidinylureidocinnamoylglycyl,thienylureidocinnamoylglycyl, etc.!, amino acid residue substituted withacyl-ar(lower)alkenoyl, for example, amino acid residue substituted withlower alkanoyl-ar(lower)alkenoyl e.g. formylcinnamoylglycyl,acetylcinnamoylglycyl, propionylcinnamoylglycyl, etc.!, amino acidresidue substituted with carboxy-ar(lower)alkenoyl e.g.carboxycinnamoylglycyl, etc.!, amino acid residue substituted with loweralkoxycarbonyl-ar(lower)alkenoyl e.g. methoxycarbonylcinnamoylglycyl,ethoxycarbonylcinnamoylglycyl, etc.!, amino acid residue substitutedwith carbamoyl-ar(lower)alkenoyl e.g. carbamoylcinnamoylglycyl, etc.!,amino acid residue substituted with loweralkylcarbamoyl-ar(lower)alkenoyl e.g. methylcarbamoylcinnamoylglycyl,ethylcarbamoylcinnamoylglycyl, dimethylcarbamoylcinnamoylglycyl,propylcarbamoylcinnamoylclycyl, isopropylcarbamoylcinnamoylglycyl,diethylcarbamoylcinnamoylglycyl,N-methyl-N-ethylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with hydroxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.hydroxyethylcarbamoylcinnamoylglycyl,bis(hydroxyethyl)carbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with N- hydroxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-hydroxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with loweralkoxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methoxymethylcarbamoylcinnamoylglycyl,methoxyethylcarbamoylcinnamoylglycyl,bis(methoxyethyl)carbamoylcinnamoylglycyl,ethoxyethylcarbamoylcinnamoylglycyl,methoxypropylcarbamoylcinnamoylglycyl,bis(ethoxyethyl)carbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with N- lower alkoxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-methoxyethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted withheterocyclic(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.pyridylmethylcarbamoylcinnamoylglycyl,furylmethylcarbamoylcinnamoylglycyl,thienylmethylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with N- heterocyclic(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-pyridylmethyl-N-methylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with heterocycliccarbamoyl-ar(lower)alkenoyl e.g.morpholinylcarbamoylcinnamoylglycyl, thienylcarbamoylcinnamoylglycyl,pyridylcarbamoylcicinnamoylglycyl, pyrimidinylcarbamoylcinnamoylglycyl,tetrazolylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with optionally substitutedheterocycliccarbonyl-ar(lower)alkenoyl e.g.morpholinocarbonylcinnamoylglycyl, pyrrolidinylcarbonylcinnamoylglycyl,piperidinocarbonylcinnamoylglycyl,tetrahydropyridylcarbonylcinnamoylglycyl,methylpiperazinylcarbonylcinnamoylglycyl, etc.!, amino acid residuesubstituted with lower alkenylcarbamoyl-ar(lower)alkenoyl e.g.vinylcarbamoylcinnamoylglycyl, allylcarbamoylcinnamoylglycyl,methylpropenylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with lower alkynylcarbamoyl-ar(lower)alkenoyl e.g.ethynylcarbamoylcinnamoylglycyl, propynylcarbamoylcinnamoylglycyl,etc.!, amino acid residue substituted withamino(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.aminomethylcarbamoylcinnamoylglycyl, aminoethylcarbamoylcinnamoylglycyl,etc.!, amino acid residue substituted with loweralkylamino(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methylaminomethylcarbamoylcinnamoylglycyl,methylaminoethylcarbamoylcinnamoylglycyl,ethylaminoethylcarbamoylcinnamoylglycyl,dimethylaminoethylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with loweralkylcarbamoyloxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methylcarbamoyloxymethylcarbamoylcinnamoylglycyl,methylcarbamoyloxyethylcarbamoylcinnamoylglycyl,ethylcarbamoyloxyethylcarbamoylcinnamoylglycyl,dimethylcarbamoyloxyethylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with loweralkylcarbamoyl(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methylcarbamoylmethylcarbamoylcinnamoylglycyl,methylcarbamoylethylcarbamoylcinnamoylglycyl,ethylcarbamoylethylcarbamoylcinnamoylglycyl,dimethylcarbamoylethylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with loweralkoxycarbonyl(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.methoxycarbonylmethylcarbamoylcinnamoylglycyl,methoxycarbonylethylcarbamoylcinnamoylglycyl,ethoxycarbonylmethylcarbamoylcinnamoylglycyl,ethoxycarbonylethylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with carboxy(lower)alkylcarbamoyl-ar(lower)alkenoyl e.g.carboxymethylcarbamoylcinnamoylglycyl,carboxyethylcarbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with loweralkylcarbamoyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.(methylcarbamoyl-phenethyl)carbamoylcinnamoylglycyl,(ethylcarbamoyl-phenethyl)carbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with loweralkoxycarbonyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.(methoxycarbonyl-phenethyl)carbamoylcinnamoylglycyl,(ethoxycarbonyl-phenethyl)carbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted withcarboxy-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl e.g.(carboxy-phenethyl)carbamoylcinnamoylglycyl, etc.!, amino acid residuesubstituted with N- lower alkylcarbamoyl(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-(methylcarbamoylmethyl)-N-methylcarbamoylcinnamoylglycyl,N-(methylcarbamoylethyl)-N-methylcarbamoylcinnamoylglycyl,N-(ethylcarbamoylethyl)-N-methylcarbamoylcinnamoylglycyl,N-(dimethylcarbamoylethyl)-N-methylcarbamoylcinnamoylglycyl, etc.!,amino acid residue substituted with N- loweralkoxycarbonyl(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyle.g. N-methoxycarbonylmethyl-N-methylcarbamoylcinnamoylglycyl,N-methoxycarbonylethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxycarbonylmethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxycarbonylethyl-N-methylcarbamoylcinnamoylglycyl, etc.!, aminoacid residue substituted with N- carboxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl e.g.N-carboxymethyl-N-methylcarbamoylcinnamoylglycyl,N-carboxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.!, amino acidresidue substituted with arylcarbamoyl-ar(lower)alkenoyl e.g.phenylcarbamoylcinnamoylglycyl, naphthylcarbamoylcinnamoylglycyl, etc.!,etc., amino acid residue substituted with ar(lower)alkynoyl e.g.phenylpropioloylglycyl, etc.!, amino acid residue substituted withheterocyclic(lower)alkenoyl e.g. morpholinylacryloylglycyl,pyridylacryloylglycyl, thienylacryloylglycyl, etc.!, amino acid residuesubstituted with amino-heterocyclic(lower)alkenoyl e.g.aminopyridylacryloylglycyl, etc.!, amino acid residue substituted withlower alkylamino-heterocyclic(lower)alkenoyl e.g.methylaminopyridylacryloylglycyl, dimethylaminopyridylacryloylglycyl,etc.!, amino acid residue substituted withacylamino-heterocyclic(lower)alkenoyl, for example, amino acid residuesubstituted with lower alkanoylamino-heterocyclic(lower)alkenoyl e.g.acetylaminopyridylacryloylglycyl, propionylaminopyridylacryloylglycyl,etc.!, amino acid residue substituted with loweralkenoylamino-heterocyclic(lower)alkenoyl e.g.acryloylaminopyridylacryloylglycyl, crotonoylaminopyridylacryloylglycyl,etc.!, amino acid residue substituted withheterocyclic(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.pyridylacetylaminopyridylacryloylglycyl,thienylacetylaminopyridylacryloylglycyl, etc.!, amino acid residuesubstituted with heterocycliccarbonylamino-heterocyclic(lower)alkenoyle.g. pyridylcarbonylaminopyridylacryloylglycyl,furylcarbamoylaminopyridylacryloylglycyl, etc.!, amino acid residuesubstituted with loweralkanoylamino(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.acetylaminoacetylaminopyridylacryloylglycyl,acetylaminopropionylaminopyridylacryloylglycyl, etc.!, amino acidresidue substituted with loweralkoxycarbonyl(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.ethoxycarbonylacetylaminopyridylacryloylglycyl,ethoxycarbonylpropionylaminopyridylacryloylglycyl, etc.!, amino acidresidue substituted with loweralkoxy(lower)alkanoylamino-heterocyclic(lower)alkenoyl e.g.methoxyacetylaminopyridylacryloylglycyl,methoxypropionylaminopyridylacryloylglycyl,ethoxypropionylaminopyridylacryloylglycyl, etc.!, etc., amino acidresidue substituted with lower alkylureido-heterocyclic(lower)alkenoyle.g. methylureidopyridylacryloylglycyl, etc.!, amino acid residuesubstituted with acyl-heterocyclic(lower)alkenoyl, for example, aminoacid residue substituted with carboxy-heterocyclic(lower)alkenoyl e.g.carboxypyridylacryloylglycyl, etc.!, amino acid residue substituted withlower alkoxycarbonyl-heterocyclic(lower)alkenoyl e.g.ethoxycarbonylpyridylacryloylglycyl, etc.!, amino acid residuesubstituted with lower alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.methylcarbamoylpyridylacryloylglycyl,ethylcarbamoylpyridylacryloylglycyl,dimethylcarbamoylpyridylacryloylglycyl,diethylcarbamoylpyridylacryloylglycyl,isopropylcarbamoylpyridylacryloylglycyl,N-ethyl-N-methylcarbamoylpyridylacryloylglycyl, etc.!, amino acidresidue substituted with loweralkoxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.methoxymethylcarbamoylpyridylacryloylglycyl,methoxyethylcarbamoylpyridylacryloylglycyl,methoxypropylcarbamoylpyridylacryloylglycyl,ethoxyethylcarbamoylpyridylacryloylglycyl,bis(methoxyethyl)carbamoylpyridylacryloylglycyl, etc.!, amino acidresidue substituted withhydroxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.hydroxymethylcarbamoylpyridylacryloylglycyl,hydroxyethylcarbamoylpyridylacryloylglycyl,bis(hydroxyethyl)carbamoylpyridylacryloylglycyl, etc.!, amino acidresidue substituted withheterocycliccarbamoyl-heterocyclic(lower)alkenoyl e.g.pyridylcarbamoylpyridylacryloylglycyl,morpholinylcarbamoylpyridylacryloylglycyl,thienylcarbamoylpyridylacryloylglycyl,pyrimidinylcarbamoylpyridylacryloylglycyl, etc.!, amino acid residuesubstituted withheterocyclic(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl e.g.pyridylmethylcarbamoylpyridylacryloylglycyl,furylmethylcarbamoylpyridylacryloylglycyl,thienylmethylcarbamoylpyridylacryloylglycyl, etc.!, amino acid residuesubstituted with heterocycliccarbonyl-heterocyclic(lower)alkenoyl e.g.morpholinocarbonylpyridylacryloylglycyl,pyrrolidinylcarbonylpyridylacryloylglycyl,piperidinocarbonylpyridylacryloylglycyl, etc.!, amino acid residuesubstituted with lower alkenylcarbamoyl-heterocyclic(lower)alkenoyl e.g.vinylcarbamoylpyridylacryloylglycyl,allylcarbamoylpyridylacryloylglycyl, etc.!, amino acid residuesubstituted with lower alkynylcarbamoyl-heterocyclic(lower)alkenoyl e.g.ethynylcarbamoylpyridylacryloylglycyl,propynylcarbamoylpyridylacryloylglycyl, etc.!, etc., amino acid residuesubstituted with heterocyclicthio(lower)alkanoyl e.g.pyridylthioacetylglycyl, pyrimidinylthioacetylglycyl,imidazolylthiopropionylglycyl, etc.!, amino acid residue substitutedwith optionally substituted heterocycliccarbonyl e.g.morpholinocarbonylglycyl, indolylcarbonylglycyl,4-methyl-1-piperazinylcarbonylglycyl, etc.!, amino acid residuesubstituted with cyclo(lower)alkylcarbonyl e.g.cyclopropylcarbonylglycyl, cyclopentylcarbonylglycyl,cyclohexylcarbonylglycyl, cyclohexylcarbonylsarcosyl, etc.!, amino acidresidue substituted with lower alkoxycarbonyl e.g.methoxycarbonylglycyl, tert-butoxycarbonylglycyl,tert-butoxycarbonylsarcosyl, tert-butoxycarbonylalanyl, etc.!, aminoacid residue substituted with aryloxycarbonyl e.g.phenoxycarbonylglycyl, etc.!, amino acid residue substituted witharoyl(lower)alkanoyl e.g. phenyloxalylglycyl, benzoylpropionylglycyl,etc.!, amino acid residue substituted with aroyl e.g. benzoylglycyl,naphthoylglycyl, benzoylsarcosyl, benzoylalanyl, etc.!, amino acidresidue substituted with nitro-aryloxycarbonyl e.g.nitrophenyloxycarbonylglycyl, etc.!, amino acid residue substituted withcarbamoyl e.g. carbamoylglycyl, carbamoylalanyl, carbamoylsarcosyl,carbamoyl-β-alanyl, etc.!, amino acid residue substituted with loweralkylcarbamoyl e.g. methylcarbamoylglycyl, ethylcarbamoylglycyl,propylcarbamoylglycyl, isopropylcarbamoylglycyl,methylcarbamoylsarcosyl, ethylcarbamoylalanyl,isopropylcarbamoyl-β-alanyl, pentylcarbamoylglycyl, etc.!, amino acidresidue substituted with lower alkoxycarbonyl(lower)alkylcarbamoyl e.g.methoxycarbonylmethylcarbamoylglycyl,ethoxycarbonylmethylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkenylcarbamoyl e.g. vinylcarbamoylglycyl,allylcarbamoylglycyl, allylcarbamoylsarcosyl, etc.!, amino acid residuesubstituted with cyclo(lower)alkylcarbamoyl e.g.cyclopropylcarbamoylglycyl, cyclohexylcarbamoylglycyl,cyclohexylcarbamoylsarcosyl, etc.!, amino acid residue substituted witharylcarbamoyl e.g. phenylcarbamoylglycyl, naphthylcarbamoylglycyl,tolylcarbamoylglycyl, ethylphenylcarbamoylglycyl, phenylcarbamoylalanyl,phenylcarbamoylsarcosyl, etc.!, amino acid residue substituted withlower alkoxy-arylcarbamoyl e.g. methoxyphenylcarbamoylglycyl,ethoxyphenylcarbamoylglycyl, methoxyphenylcarbamoylalanyl, etc.!, aminoacid residue substituted with halo(lower)alkyl-arylcarbamoyl e.g.trifluoromethylphenylcarbamoylglycyl,trifluoromethylphenylcarbamoylalanyl,trifluoromethylphenylcarbamoylsarcosyl, etc.!, amino acid residuesubstituted with halo-arylcarbamoyl e.g. chlorophenylcarbamoylglycyl,fluorophenylcarbamoylglycyl, fluorophenylcarbamoylalanyl, etc.!, aminoacid residue substituted with hydroxy(lower)alkyl-arylcarbamoyl e.g.hydroxymethylphenylcarbamoylglycyl, hydroxyethylphenylcarbamoylglycyl,hydroxyethylphenylcarbamoylalanyl, etc.!, amino acid residue substitutedwith nitro-arylcarbamoyl e.g. nitrophenylcarbamoylglycyl, etc.!, aminoacid residue substituted with cyano-arylcarbamoyl e.g.cyanophenylcarbamoylglycyl, etc.!, amino acid residue substituted withamino-arylcarbamoyl e.g. aminophenylcarbamoylglycyl, etc.!, amino acidresidue substituted with lower alkylamino-acrylcarbamoyl e.g.methylaminophenylcarbamoylglycyl, ethylaminophenylcarbamoylglycyl,dimethylaminophenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkanoylamino-arylcarbamoyl e.g.acetylaminophenylcarbamoylglycyl, propionylaminophenylcarbamoylglycyl,etc.!, amino acid residue substituted with N-(lower alkanoyl)-N-(loweralkyl)amino-arylcarbamoyl e.g.N-acetyl-N-methylaminophenylcarbamoylglycyl,N-propionyl-N-methylaminophenylcarbamoylglycyl, etc.!, amino acidresidue substituted with lower alkoxy(lower)alkanoylamino-arylcarbamoyle.g. methoxyacetylaminophenylcarbamoylglycyl,methoxypropionylaminophenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkoxycarbonyl(lower)alkanoylamino-arylcarbamoyle.g. ethoxycarbonylacetylaminophenylcarbamoylglycyl,methoxycarbonylpropionylaminophenylcarbamoylglycyl, etc.!, amino acidresidue substituted with carboxyamino-arylcarbamoyl e.g.carboxyaminophenylcarbamoylglycyl, etc.!, amino acid residue substitutedwith lower alkoxycarbonylamino-arylcarbamoyl e.g.ethoxycarbonylaminophenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with aroylamino-arylcarbamoyl e.g.benzoylaminophenylcarbamoylglycyl, etc.!, amino acid residue substitutedwith heterocycliccarbonylamino-arylcarbamoyl e.g.pyridylcarbonylaminophenylcarbamoylglycyl,furylcarbonylaminophenylcarbamoylglycyl,morpholinocarbonylaminophenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with heterocyclic(lower)alkanoylamino-arylcarbamoyl e.g.pyridylacetylaminophenylcarbamoylglycyl,thienylacetylaminophenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with ureido-arylcarbamoyl e.g. ureidophenylcarbamoylglycyl,etc.!, amino acid residue substituted with loweralkylureido-arylcarbamoyl e.g. methylureidophenylcarbamoylglycyl,ethylureidophenylcarbamoylglycyl, etc.!, amino acid residue substitutedwith hydroxyimino(lower)alkyl-arylcarbamoyl e.g.hydroxyiminoethylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkoxyimino(lower)alkyl-arylcarbamoyl e.g.methoxyiminoethylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkylhydrazono(lower)alkyl-arylcarbamoyl e.g.methylhydrazonoethylphenylcarbamoylglycyl,dimethylhydrazonoethylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with optionally substituted heterocyclic-arylcarbamoyl e.g.oxopyrrolidinylphenylcarbamoylglycyl,oxopiperidinophenylcarbamoylglycyl,dioxopyrrolidinylphenylcarbamoylglycyl,oxooxazolidinylphenylcarbamoylglycyl, pyrrolylphenylcarbamoylglycyl,etc.!, amino acid residue substituted with acyl-arylcarbamoyl, forexample, amino acid residue substituted with loweralkanoyl-arylcarbamoyl e.g. acetylphenylcarbamoylglycyl,propionylphenylcarbamoylglycyl, etc.!, amino acid residue substitutedwith heterocycliccarbonyl-arylcarbamoyl e.g.morpholinocarbonylphenylcarbamoylglycyl,piperidinocarbonylphenylcarbamoylglycyl,piperazinylcarbonylphenylcarbamoylglycyl,thiomorpholinocarbonylphenylcarbamoylalanyl,pyrrolidinylcarbonylphenylcarbamoylglycyl,1,2,3,6-tetrahydropyridylcarbonylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with carboxy-arylcarbamoyl e.g.carboxyphenylcarbamoylglycyl, etc.!, amino acid residue substituted withlower alkoxycarbonyl-arylcarbamoyl e.g.methoxycarbonylphenylcarbamoylglycyl,ethoxycarbonylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with carbamoyl-arylcarbamoyl e.g.carbamoylphenylcarbamoylglycyl, etc.!, amino acid residue substitutedwith lower alkylcarbamoyl-arylcarbamoyl e.g.methylcarbamoylphenylcarbamoylglycyl,ethylcarbamoylphenylcarbamoylglycyl,propylcarbamoylphenylcarbamoylglycyl,dimethylcarbamoylphenylcarbamoylglycyl,diethylcarbamoylphenylcarbamoylglycyl,N-ethyl-N-methylcarbamoylphenylcarbamoylglycyl,N-isopropyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having loweralkyl e.g. methylpiperazinylcarbonylphenylcarbamoylglycyl,ethylpiperazinylcarbonylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with heterocycliccarbonyl-arylcarbamoyl having aryl e.g.phenylpiperazinylcarbonylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having aheterocyclic group e.g. pyridylpiperazinylcarbonylphenylcarbamoylglycyl,etc.!, amino acid residue substituted withheterocycliccarbonyl-arylcarbamoyl having lower alkanoyl e.g.acetylpiperazinylcarbonylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having loweralkoxycarbonyl e.g.ethoxycarbonylpiperazinylcarbonylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with heterocycliccarbonyl-arylcarbamoyl havinglower alkylamino e.g.methylaminopiperazinylcarbonylphenylcarbamoylglycyl,dimethylaminopiperidinocarbonylphenylcarbamoylglycyl, etc.!, amino acidresidue substitued with heterocycliccarbonyl-arylcarbamoyl having loweralkylcarbamoyl e.g.methylcarbamoylpiperazinylcarbonylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with hydroxy(lower)alkylcarbamoyl-arylcarbamoyle.g. hydroxymethylcarbamoylphenylcarbamoylglycyl,hydroxyethylcarbamoylphenylcarbamoylglycyl,bis(hydroxyethyl)carbamoylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with N- hydroxy(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl e.g.N-(hydroxyethyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with loweralkoxy(lower)alkylcarbamoyl-arylcarbamoyl e.g.methoxymethylcarbamoylphenylcarbamoylglycyl,methoxyethylcarbamoylphenylcarbamoylglycyl,ethoxyethylcarbamoylphenylcarbamoylglycyl,bis(methoxyethyl)carbamoylphenylcarbamoylglycyl,bis(ethoxyethyl)carbamoylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with N- lower alkoxy(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl e.g.N-(methoxyethyl)-N-methylcarbamoylphenylcarbamoylglycyl,N-(methoxypropyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with loweralkylamino(lower)alkylcarbamoyl-arylcarbamoyl e.g.methylaminoethylcarbamoylphenylcarbamoylglycyl,dimethylaminoethylcarbamoylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with N- lower alkylamino(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl e.g.N-(dimethylaminoethyl)-N-methylcarbamoylphenylcarbamoylglycyl,N-(dimethylaminopropyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.!,amino acid residue substituted with heterocycliccarbamoyl-arylcarbamoyle.g. morpholinylcarbamoylphenylcarbamoylglycyl,thienylcarbamoylphenylcarbamoylglycyl,pyridylcarbamoylphenylcarbamoylglycyl,pyrimidinylcarbamoylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with N-(heterocyclic)-N-(lower alkyl)carbamoyl-arylcarbamoyle.g. N-pyridyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.!, amino acidresidue substituted with heterocyclic(lower)alkylcarbamoyl-arylcarbamoyle.g. pyridylmethylcarbamoylphenylcarbamoylglycyl,pyridylethylcarbamoylphenylcarbamoylglycyl,thienylmethylcarbamoylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with N- heterocyclic(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl e.g.N-pyridylmethyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.!, aminoacid residue substituted with N- heterocyclic(lower)alkyl!-N- loweralkoxy(lower)alkyl!carbamoyl-arylcarbamoyl e.g.N-pyridylmethyl-N-methoxyethylcarbamoylphenylcarbamoylglycyl, etc.!,amino acid residue substituted with arylcarbamoyl-arylcarbamoyl e.g.phenylcarbamoylphenylcarbamoylglycyl, etc.!, amino acid residuesubstituted with lower alkylaminoarylcarbamoyl-arylcarbamoyl e.g.dimethylaminophenylcarbamoylphenylcarbamoylglycyl, etc.!, etc., aminoacid residue substituted with arylthiocarbamoyl e.g.phenylthiocarbamoylglycyl, naphthylthiocarbamoylglycyl,phenylthiocarbamoylalanyl, phenylthiocarbamoylsarcosyl, etc.!, aminoacid residue substituted with ar(lower)alkylcarbamoyl e.g.benzylcarbamoylglycyl, benzylcarbamoylsarcosyl, benzylcarbamoylalanyl,etc.!, amino acid residue substituted with aroylcarbamoyl e.g.benzoylcarbamoylglycyl, etc.!, amino acid residue substituted withheterocycliccarbamoyl e.g. pyridylcarbamoylglycyl,pyridylcarbamoylalanyl, pyridylcarbamoylsarcosyl,thienylcarbamoylglycyl, pyrazolylcarbamoylglycyl,pyrimidinylcarbamoylglycyl, quinolylcarbamoylglycyl,isoguinolylcarbamoylglycyl, etc.!, amino acid residue substituted withheterocyclic(lower)alkylcarbamoyl e.g. pyridylmethylcarbamoylglycyl,pyridylethylcarbamoylglycyl, thienylmethylcarbamoylglycyl, etc.!, aminoacid residue substituted with arylaminocarbamoyl e.g.phenylaminocarbamoylglycyl, etc.!, amino acid residue substituted withar(lower)alkenylsulfonyl e.g. styrylsulfonylglycyl,cinnamoylsulfonylglycyl, etc.!, amino acid residue substituted withlower alkylsulfonyl e.g. mesylglycyl, ethylsulfonylglycyl,mesylsarcosyl, mesylalanyl, etc.!, amino acid residue substituted withphthaloyl e.g. phthaloylglycyl, phthaloylalanyl, phthaloyl-β-alanyl,etc.!, amino acid residue having unsubstituted amino acid residue e.g.glycylglycyl, alanylglycyl, sarcosylglycyl, prolylglycyl,glycylsarcosyl, prolylsarcosyl, etc.!, amino acid residue havingsubstituted amino acid residue e.g. amino acid residue having amino acidresidue substituted with lower alkyl (e.g. dimethylglycylglycyl,diethylglycylglycyl, dimethylglycylsarcosyl, ethylsarcosylglycyl,isopropylsarcosylglycyl, ethylglycylglycyl, propylglycylglycyl,isopropylglycylglycyl, ethylglycylalanyl, dimethylglycylalanyl,dimethylalanylglycyl, dimethyl-β-alanylglycyl, etc.), amino acid residuehaving amino acid residue substituted with a heterocyclic group (e.g.morpholinoglycylglycyl, piperidinoglycylglycyl, pyridylglycylglycyl,piperidinosarcosylglycyl, etc.), amino acid residue having amino acidresidue substituted with heterocyclic(lower)alkyl (e.g.pyridylmethylglycylglycyl, imidazolylmethylglycylglycyl,furylmethylglycylglycyl, thienylmethylsarcosylglycyl, etc.), amino acidresidue having amino acid residue substituted with cycloalkyl (e.g.cyclopropylglycylglycyl, cyclobutylglycylglycyl,cyclopentylglycylglycyl, cyclohexylglycylglycyl,cycloheptylglycylglycyl, cyclooctylglycylglycyl, adamantylglycylglycyl,cyclohexylsarcosylglycyl, cycloheptylsarcosylglycyl,cyclohexylglycylsarcosyl, cyclohexylglycylalanyl, etc.), amino acidresidue having amino acid residue substituted with aryl (e.g.phenylglycylglycyl, phenylsarcosylglycyl, etc.), amino acid residuehaving amino acid residue substituted with acyl {e.g. amino acid residuehaving amino acid residue substituted with alkanoyl (e.g.acetylglycylglycyl, acetylprolylglycyl, propionylglycylglycyl,acetylalanylglycyl, etc.), amino acid residue having amino acid residuesubstituted with lower alkoxycarbonyl (e.g.tert-butoxycarbonylglycylglycyl, tert-butoxycarbonylprolylglycyl, etc.),amino acid residue having amino acid residue substituted with phthaloyl(e.g. phthaloylglycylglycyl, etc.), etc.}, amino acid residue havingamino acid residue substituted with ar(lower)alkyl (e.g.benzylglycylglycyl, etc.), etc.!, etc., or the like.

Groups of the formulas of the compounds If! and Ig!: ##STR4## whereinR¹², R¹³, (AA), Y and Z are each as defined above, are also includedwithin "acyl".

Suitable "acyl having amino" may be unsubstituted amino acid residue,amino acid residue having unsubstituted amino acid residue, or the like,and preferred examples thereof can be referred to those exemplifiedabove.

Suitable "acyl having acylamino" may be amino acid residue substitutedwith acyl, amino acid residue having amino acid residue substituted withacyl, or the like, and preferred examples thereof can be referred tothose exemplified above.

Suitable "protected or unprotected hydroxy(lower)alkyl" may behydroxymethyl, hydroxyethyl, hydroxypropyl, benzyloxymethyl,tert-butyldiphenylsilyloxyethyl or the like.

Suitable "lower alkoxy(lower)alkyl" may be methoxymethyl, methoxyethyl,methoxypropyl, ethoxymethyl, ethoxyethyl, or the like.

Suitable "lower alkylamino(lower)alkyl" may be methylaminomethyl,methylaminoethyl, methylaminopropyl, dimethylaminomethyl,dimethylaminoethyl, dimethylaminopropyl, diethylaminoethyl, or the like.

Suitable "acyl having lower alkylamino" may be amino acid residuesubstituted with lower alkyl, amino acid residue having amino acidresidue substituted with lower alkyl, or the like, and preferredexamples thereof can be referred to those exemplified above.

Suitable "acyl having ar(lower)alkylamino" may be amino acid residuesubstituted with ar(lower)alkyl, amino acid residue having amino acidresidue substituted with ar(lower)alkyl, or the like, and preferredexamples thereof can be referred to those exemplified above.

Suitable "heterocyclic group" and heterocyclic moiety in the term"heterocyclic(lower)alkyl" may be saturated or unsaturated, monocyclicor polycyclic heterocyclic group containing at least one hetero-atomsuch as an oxygen, sulfur and/or nitrogen atom such as:

unsaturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing 1 to 4 nitrogen atom(s), for example, pyrrolyl,pyrrolinyl, imidazolyl, pyrazolyl, pyridyl, and its N-oxide,pyrimidinyl, pyrazinyl, pyridazinyl, triazolyl, tetrazolyl,dihydrotriazinyl, etc.;

saturated 3 to 8-membered, preferably 4 or 6-membered heteromonocyclicgroup containing 1 to 4 nitrogen atom(s), for example, azetidinyl,pyrrolidinyl, imidazolidinyl, piperidyl, pyrazolidinyl, piperazinyl,etc.;

unsaturated condensed 7 to 12-membered heterocyclic group containing 1to 5 nitrogen atom(s), for example, indolyl, isoindolyl, indolizinyl,benzimidazolyl, quinolyl, isoquinolyl, tetrahydroquinolyl, indazolyl,benzotriazolyl, imidazopyridyl, etc.;

unsaturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing an oxygen atom, for example, furyl, etc.;

unsaturated condensed 7 to 12-membered heterocyclic group containing 1to 2 oxygen atom(s), for example, benzofuryl, piperonyl, etc.;

unsaturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing a sulfur atom, for example, thienyl, etc.;

unsaturated condensed 7 to 12-membered heterocyclic group containing 1to 2 sulfur atom(s), for example, benzothienyl, etc.;

unsaturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing 1 to 2 oxygen atom(s) and 1 to 3 nitrogen atom(s), forexample, oxazolyl, isoxazolyl, oxadiazolyl, etc.;

saturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing 1 to 2 oxygen atom(s) and 1 to 3 nitrogen atom(s), forexample, morpholinyl, etc.;

unsaturated condensed 7 to 12-membered heterocyclic group containing 1to 2 oxygen atom(s) and 1 to 3 nitrogen atom(s), for example,benzoxazolyl, benzoxadiazolyl, etc.;

unsaturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing 1 to 2 sulfur atom(s) and 1 to 3 nitrogen atom(s), forexample, thiazolyl, isothiazolyl, thiazolinyl, thiadiazolyl, etc.;

saturated 3 to 8-membered, preferably 5 or 6-membered heteromonocyclicgroup containing 1 to 2 sulfur atom(s) and 1 to 3 nitrogen atom(s), forexample, thiazolidinyl, etc.;

unsaturated condensed 7 to 12-membered heterocyclic group containing 1to 2 sulfur atom(s) and 1 to 3 nitrogen atom(s), for example,benzothiazolyl, benzothiadiazolyl, benzothiazinyl, benzothiazolinyl,etc., or the like.

Suitable substituents in the terms "aryl having suitable substituent(s)"or "heterocyclic group optionally having suitable substituent(s)" may bethe above-mentioned halogen; the above-mentioned halo(lower)alkyl; theabove-mentioned lower alkyl; the above-mentioned acyl; theabove-mentioned aryl; aryl substituted with substituent(s) such ashalogen or cyano e.g. chlorophenyl, cyanophenyl, etc.!; ar(lower)alkylsubstituted with hydroxy e.g. hydroxybenzyl, etc.!; lower alkoxy e.g.methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, tert-butoxy,pentyloxy, hexyloxy, etc.!; oxo; nitro; amino; amino substituted withthe above-mentioned lower alkyl, the above-mentioned acyl,ar(lower)alkyl e.g. benzyl, phenethyl, trityl, etc.!,heterocyclic(lower)alkyl e.g. pyridylmethyl, etc.!, carboxy(lower)alkyle.g. carboxymethyl, carboxyethyl, etc.!, lower alkylaminomethylene e.g.dimethylaminomethylene, diethylaminomethylene, etc.!,N-methylpyrrolidinylidene, etc.; the above-mentioned heterocyclic group;heterocyclic group substituted with oxo e.g. pyrrolidonyl, etc.!; or thelike.

Suitable "heterocyclic group" formed by R¹², R¹³ and the attachednitrogen atom may be morpholino, thiomorpholino, pyrrolidin-1-yl,piperidino, 1,2,3,6-tetrahydropyridin-1-yl, piperazin-1-yl, or the like.And said heterocyclic group may be substituted with suitablesubstituent(s) such as the above-mentioned lower alkyl, theabove-mentioned heterocyclic group, the above-mentioned acyl, loweralkylamino, the above-mentioned aryl, or the like.

Preferred examples of "heterocyclic(lower)alkyl" may bemorpholinomethyl, morpholinoethyl, pyridylmethyl, pyridylethyl,thienylmethyl, piperidinomethyl, imidazolylmethyl, or the like.

Particularly, the preferred embodiments of R¹, R², R³, R⁴, Q and A areas follows

R¹ is halogen such as fluorine, chlorine, bromine and iodine;

R² and R³ are each hydrogen; lower alkyl such as methyl, ethyl, propyl,isopropyl, butyl, isobutyl, tert-butyl, pentyl and hexyl;halo(lower)alkyl such as fluoromethyl, chloromethyl, bromomethyl andtrifluoromethyl; or acyl such as carboxy and esterified carboxy, forexample, lower alkoxycarbonyl e.g. methoxycarbonyl, ethoxycarbonyl,tert-butoxycarbonyl, etc.!;

R⁴ is phenyl substituted with substituent(s) such as

halogen such as fluorine, chlorine, bromine and iodine,

lower alkyl such as methyl, ethyl, propyl and isopropyl,

halo(lower)alkyl such as trifluoromethyl,

phenyl,

cyanophenyl,

hydroxybenzyl,

lower alkoxy such as methoxy, ethoxy, propoxy and isopropoxy,

nitro,

a group of the formula: ##STR5## in which R_(a) ⁵ is hydrogen; loweralkyl such as methyl, ethyl, propyl and butyl; carboxy(lower)alkyl suchas carboxymethyl and carboxyethyl; and acyl such as lower alkanoyl e.g.formyl, acetyl, propionyl, etc.!, carboxy and esterified carboxy e.g.lower alkoxycarbonyl (e.g. methoxycarbonyl, ethoxycarbonyl,tert-butoxycarbonyl, etc.), etc.!,

R_(d) ¹⁰ is hydrogen; lower alkyl such as methyl, ethyl, propyl,isopropyl and butyl; ar(lower)alkyl such as benzyl;heterocyclic(lower)alkyl such as pyridyl(lower)alkyl e.g. pyridylmethyl,pyridylethyl, etc.!; and acyl such as lower alkanoyl e.g. formyl,acetyl, propionyl, butyryl, isobutyryl, etc.!, halo(lower)alkanoyl e.g.trifluoroacetyl, etc.!, carboxy, esterified carboxy e.g. loweralkoxycarbonyl (e.g. methoxycarbonyl, ethoxycarbonyl,tert-butoxycarbonyl, etc.), etc.!, hydroxy(lower)alkanoyl e.g.glycoloyl, lactoyl, 3-hydroxypropionyl, etc.!, loweralkanoyloxy(lower)alkanoyl e.g. acetyloxyacetyl, acetyloxypropionyl,etc.!, lower alkoxy(lower)alkanoyl e.g. methoxyacetyl, methoxypropionyl,etc.!, benzoyl, toluoyl, benzoyl substituted with lower alkoxy e.g.methoxybenzoyl, etc.!, benzoyl substituted with esterified carboxy e.g.lower alkoxycarbonylbenzoyl (e.g. methoxycarbonylbenzoyl,tert-butoxycarbonylbenzoyl, etc.), etc.!, benzoyl substituted withhalogen e.g. chlorobenzoyl, fluorobenzoyl etc.!, phenoxycarbonyloptionally substituted with nitro, lower alkylsulfonyl e.g. mesyl,ethylsulfonyl, etc.!, carbamoyl, lower alkylcarbamoyl e.g.methylcarbamoyl, ethylcarbamoyl, isopropylcarbamoyl, etc.!,halo(lower)alkanoylcarbamoyl e.g. trichloroacetylcarbamoyl, etc.!,phenylcarbamoyl, unsubstituted amino acid residue e.g. glycyl, sarcosyl,alanyl, β-alanyl, etc.! and substituted amino acid residue e.g. aminoacid residue substituted with lower alkyl (e.g. ethylglycyl,isopropylglycyl, dimethylglycyl, diethylglycyl, ethylsarcosyl,isopropylsarcosyl, methylalanyl, methyl-β-alanyl, etc.), amino acidresidue substituted with optionally substituted amidino (e.g.amidinoglycyl, N-ethyl-N'-cyanoamidinoglycyl, etc.), amino acid residuesubstituted with acyl {e.g. amino acid residue substituted with alkanoyl(e.g. formylglycyl, acetylglycyl, acetylsarcosyl, acetylalanyl,acetyl-β-alanyl, propionylglycyl, butyrylglycyl, isobutyrylglycyl,valerylglycyl, isovalerylglycyl, pivaloylglycyl, hexanoylglycyl,heptanoylglycyl, etc.), amino acid residue substituted withhalo(lower)alkanoyl (e.g. trifluoroacetylglycyl,trifluoroacetylsarcosyl, trifluoroacetylalanyl, bromoacetylglycyl,heptafluorobutyrylglycyl, etc.), amino acid residue substituted withhydroxy(lower)alkanoyl (e.g. glycoloylglycyl, glycoloylsarcosyl,lactoylglycyl, lactoylalanyl, etc.), amino acid residue substituted withlower alkylsulfonyloxy(lower)alkanoyl (e.g. mesyloxyacetylglycyl,ethylsulfonyloxyacetylglycyl, mesyloxyacetylsarcosyl, etc.), amino acidresidue substituted with lower alkoxy(lower)alkanoyl (e.g.methoxyacetylglycyl, ethoxyacetylglycyl, methoxyacetylsarcosyl,methoxypropionylalanyl, etc.), amino acid residue substituted witharyloxy(lower)alkanoyl (e.g. phenyloxyacetylglycyl,phenyloxypropionylglycyl, phenyloxyacetylsarcosyl, etc.), amino acidresidue substituted with lower alkylthio(lower)alkanoyl (e.g.methylthioacetylglycyl, methylthiopropionylglycyl, etc.), amino acidresidue substituted with lower alkylcarbamoyl(lower)alkanoyl (e.g.methylcarbamoylpropionylglycyl, methylcarbamoylpropionylalanyl, etc.),amino acid residue substituted with lower alkanoyloxy(lower)alkanoyl(e.g. acetyloxyacetylglycyl, acetyloxyacetylsarcosyl,propionyloxyacetylglycyl, acetyloxypropionylalanyl, etc.), amino acidresidue substituted with carboxy(lower)alkanoyl (e.g.carboxyacetylglycyl, carboxypropionylglycyl, carboxypropionylsarcosyl,carboxyacetylalanyl, etc.), amino acid residue substituted with loweralkoxycarbonyl(lower)alkanoyl (e.g. methoxycarbonylacetylglycyl,ethoxycarbonylpropionylglycyl, methoxycarbonylacetylsarcosyl, etc.),amino acid residue substituted with ar(lower)alkanoyl (e.g.phenylacetylglycyl, phenylpropionylglycyl, phenylbutyrylglycyl,phenylacetylsarcosyl, phenylpropionylalanyl, naphthylacetylglycyl,etc.), amino acid residue substituted with optionally substitutedheterocyclic(lower)alkanoyl (e.g. morpholinoacetylglycyl,pyridylacetylglycyl, morpholinopropionylalanyl, imidazolylacetylglycyl,piperidinoacetylglycyl, pyrrolidinylacetylglycyl,hexamethyleneiminoacetylglycyl, methylpiperazinylacetylglycyl,pyridylpiperazinylacetylglycyl, thiomorpholinoacetylglycyl, its oxide ordioxide, etc.), amino acid residue substituted with lower alkenoyl (e.g.acryloylglycyl, crotonoylglycyl, 3-pentenoylglycyl, 3-butenoylglycyl,4-pentenoylglycyl, 3-butenoylsarcosyl, etc.), amino acid residuesubstituted with ar(lower)alkenoyl (e.g. cinnamoylglycyl,α-methylcinnamoylglycyl, 4-methylcinnamoylglycyl, etc.), amino acidresidue substituted with lower alkoxy-ar(lower)alkenoyl (e.g.methoxycinnamoylglycyl, ethoxycinnamoylglycyl, dimethoxycinnamoylglycyl,etc.), amino acid residue substituted with loweralkylenedioxy-ar(lower)alkenoyl (e.g. methylenedioxycinnamoylglycyl,ethylenedioxycinnamoylglycyl, etc.), amino acid residue substituted withnitro-ar(lower)alkenoyl (e.g. nitrocinnamoylglycyl, etc.), amino acidresidue substituted with cyano-ar(lower)alkenoyl (e.g.cyanocinnamoylglycyl, etc.), amino acid residue substituted withhalo-ar(lower)alkenoyl (e.g. chlorocinnamoylglycyl,fluorocinnamoylglycyl, etc.), amino acid residue substituted withhydroxy-ar(lower)alkenoyl (e.g. hydroxycinnamoylglycyl, etc.), aminoacid residue substituted with hydroxy(lower)alkoxy-ar(lower)alkenoyl(e.g. hydroxymethoxycinnamoylglycyl, hydroxyethoxycinnamoylglycyl,etc.), amino acid residue substituted withamino(lower)alkoxy-ar(lower)alkenoyl (e.g. aminoethoxycinnamoylglycyl,etc.), amino acid residue substituted with loweralkylamino(lower)alkoxy-ar(lower)alkenoyl (e.g.methylaminomethoxycinnamoylglycyl, dimethylaminoethoxycinnamoylglycyl,etc.), amino acid residue substituted withheterocyclic(lower)alkoxy-ar(lower)alkenoyl (e.g.pyridylmethoxycinnamoylglycyl, etc.), amino acid residue substitutedwith optionally substituted heterocyclic-ar(lower)alkenoyl (e.g.morpholinocinnamoylglycyl, methylpiperazinylcinnamoylglycyl,pyrrolidinylcinnamoylglycyl, oxopyrrolidinylcinnamoylglycyl,oxopiperidinocinnamoylglycyl, dioxopyrrolidinylcinnamoylglycyl,oxooxazolidinylcinnamoylglycyl, pyrrolylcinnamoylglycyl,tetrazolylcinnamoylglycyl, etc.), amino acid residue substituted withamino-ar(lower)alkenoyl (e.g. aminocinnamoylglycyl, etc.), amino acidresidue substituted with lower alkylamino-ar(lower)alkenoyl (e.g.methylaminocinnamoylglycyl, dimethylaminocinnamoylglycyl, etc.), aminoacid residue substituted with lower alkanoylamino-ar(lower)alkenoyl(e.g. acetylaminocinnamoylglycyl, propionylaminocinnamoylglycyl,isobutyrylaminocinnamoylglycyl, etc.), amino acid residue substitutedwith cycloalkyl(lower)alkanoylamino-ar(lower)alkenoyl (e.g.cyclopentylacetylaminocinnamoylglycyl,cyclohexylacetylaminocinnamoylglycyl,adamantylacetylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with cycloalkylcarbonylamino-ar(lower)alkenoyl (e.g.cyclopropylcarbonylaminocinnamoylglycyl,cyclopentylcarbonylaminocinnamoylglycyl,cyclohexylcarbonylaminocinnamoylglycyl,adamantylcarbonylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with lower alkenoylamino-ar(lower)alkenoyl (e.g.acryloylaminocinnamoylglycyl, crotonoylaminocinnamoylglycyl, etc.) aminoacid residue substituted with loweralkoxycarbonylamino-ar(lower)alkenoyl (e.g.methoxycarbonylaminocinnamoylglycyl, ethoxycarbonylaminocinnamoylglycyl,etc.), amino acid residue substituted withhydroxy(lower)alkanoylamino-ar(lower)alkenoyl (e.g.hydroxyacetylaminocinnamoylglycyl, hydroxypropionylaminocinnamoylglycyl,etc.), amino acid residue substituted with loweralkoxy(lower)alkanoylamino-ar(lower)alkenoyl (e.g.methoxyacetylaminocinnamoylglycyl, methoxypropionylaminocinnamoylglycyl,etc.), amino acid residue substituted withhalo(lower)alkanoylamino-ar(lower)alkenoyl (e.g.chloroacetylaminocinnamoylglycyl, trifluoroacetylaminocinnamoylglycyl,bromobutyrylaminocinnamoylglycyl, etc.), amino acid residue substitutedwith amino(lower)alkanoylamino-ar(lower)alkenoyl (e.g.aminoacetylaminocinnamoylglycyl, aminopropionylaminocinnamoylglycyl,etc.), amino acid residue substituted with loweralkylamino(lower)alkanoylamino-ar(lower)alkenoyl (e.g.methylaminoacetylaminocinnamoylglycyl,dimethylaminoacetylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with loweralkanoylamino(lower)alkanoylamino-ar(lower)alkenoyl (e.g.acetylaminoacetylaminocinnamoylglycyl,acetylaminopropionylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with carboxy(lower)alkanoylamino-ar(lower)alkenoyl (e.g.carboxyacetylaminocinnamoylglycyl, carboxypropionylaminocinnamoylglycyl,etc.), amino acid residue substituted with loweralkoxycarbonyl(lower)alkanoylamino-ar(lower)alkenoyl (e.g..ethoxycarbonylacetylaminocinnamoylglycyl,ethoxycarbonylpropionylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with loweralkoxycarbonyl(lower)alkenoylamino-ar(lower)alkenoyl (e.g.ethoxycarbonylacryloylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with halo(lower)alkoxycarbonylamino-ar(lower)alkenoyl (e.g.chloroethoxycarbonylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with optionally substitutedheterocyclic(lower)alkanoylamino-ar(lower)alkenoyl (e.g.pyridylacetylaminocinnamoylglycyl, thienylacetylaminocinnamoylglycyl,methylpyrrolylacetylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with aroylamino-ar(lower)alkenoyl (e.g.benzoylaminocinnamoylglycyl, etc.), amino acid residue substituted withoptionally substituted heterocycliccarbonylamino-ar(lower)alkenoyl (e.g.pyridylcarbonylaminocinnamoylglycyl,morpholinocarbonylaminocinnamoylglycyl,furylcarbonylaminocinnamoylglycyl, thienylcarbonylaminocinnamoylglycyl,oxazolylcarbonylaminocinnamoylglycyl,methyloxazolylcarbonylaminocinnamoylglycyl,dimethylisoxazolylcarbonylaminocinnamoylglycyl,imidazolylcarbonylaminocinnamoylglycyl,methylimidazolylcarbonylaminocinnamoylglycyl,piperidylcarbonylaminocinnamoylglycyl,ethylpiperidylcarbonylaminocinnamoylglycyl,acetylpiperidylcarbonylaminocinnamoylglycyl,pyrrolidinylcarbonylaminocinnamoylglycyl,acetylpyrrolidinylcarbonylaminocinnamoylglycyl,tert-butoxycarbonylpyrrolidinylcarbonylaminocinnamoylglycyl, etc.),amino acid residue substituted with loweralkylsulfonylamino-ar(lower)alkenoyl (e.g. mesylaminocinnamoylglycyl,ethylsulfonylaminocinnamoylglycyl, etc.), amino acid residue substitutedwith N-(lower alkanoyl)-N-(lower alkyl)amino-ar(lower)alkenoyl (e.g.N-acetyl-N-methylaminocinnamoylglyclyl,N-acetyl-N-ethylaminocinnamoylglycyl,N-propionyl-N-methylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with N- lower alkoxy(lower)alkanoyl!-N-(loweralkyl)amino-ar(lower)alkenoyl (e.g.N-methoxyacetyl-N-methylaminocinnamoylglycyl,N-methoxypropionyl-N-methylaminocinnamoylglycyl, etc.), amino acidresidue substituted with N-(lower alkanoyl)-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl (e.g.N-acetyl-N-pyridylmethylaminocinnamoylglycyl, etc.), amino acid residuesubstituted with N-(lower alkanoyl)-N- loweralkoxy(lower)alkyl!amino-ar(lower)alkenoyl (e.g.N-acetyl-N-methoxyethylaminocinnamoylglycyl,N-acetyl-N-methoxymethylaminocinnamoylglycyl,N-propionyl-N-methoxyethylaminocinnamoylglycyl, etc.), amino acidresidue substituted with N-(lower alkanoyl)-N- loweralkoxycarbonyl(lower)alkyl!amino-ar(lower)alkenoyl (e.g.N-acetyl-N-tert-butoxycarbonylmethylaminocinnamoylglycyl,N-acetyl-N-tert-butoxycarbonylethylaminocinnamoylglycyl,N-propionyl-N-tert-butoxycarbonylmethylaminocinnamoylglycyl, etc.),amino acid residue substituted with N-(lower alkanoyl)-N-carboxy(lower)alkyl!amino-ar(lower)alkenoyl (e.g.N-acetyl-N-carboxymethylaminocinnamoylglycyl,N-acetyl-N-carboxyethylaminocinnamoylglycyl,N-propionyl-N-carboxymethylaminocinnamoylglycyl, etc.), amino acidresidue substituted with N- lower alkoxy(lower)alkanoyl!-N-heterocyclic(lower)alkyl!amino-ar(lower)alkenoyl (e.g.N-methoxyacetyl-N-pyridylmethylaminocinnamoylglycyl,N-methoxypropionyl-N-pyridylmethylaminocinnamoylglycyl, etc.), aminoacid residue substituted with N- heterocycliccarbonyl!-N- loweralkoxy(lower)alkyllamino-ar(lower)alkenoyl (e.g.N-pyridylcarbonyl-N-methoxymethylaminocinnamoylglycyl,N-pyridylcarbonyl-N-methoxyethylaminocinnamoylglycyl,N-thienylcarbonyl-N-methoxyethylaminocinnamoylglycyl, etc.), amino acidresidue substituted with ureido-ar(lower)alkenoyl (e.g.ureidocinnamoylglycyl, etc.), amino acid residue substituted with loweralkylureido-ar(lower)alkenoyl (e.g. methylureidocinnamoylglycyl,ethylureidocinnamoylglycyl, dimethylureidocinnamoylglycyl, etc.), aminoacid residue substituted with heterocyclicureido-ar(lower)alkenoyl (e.g.pyridylureidocinnamoylglycyl, pyrimidinylureidocinnamoylglycyl,thienylureidocinnamoylglycyl, etc.), amino acid residue substituted withlower alkanoyl-ar(lower)alkenoyl (e.g. formylcinnamoylglycyl,acetylcinnamoylglycyl, propionylcinnamoylglycyl, etc.), amino acidresidue substituted with carboxy-ar(lower)alkenoyl (e.g.carboxycinnamoylglycyl, etc.), amino acid residue substituted with loweralkoxycarbonyl-ar(lower)alkenoyl (e.g. methoxycarbonylcinnamoylglycyl,ethoxycarbonylcinnamoylglycyl, etc.), amino acid residue substitutedwith carbamoyl-ar(lower)alkenoyl (e.g. carbamoylcinnamoylglycyl, etc.),amino acid residue substituted with loweralkylcarbamoyl-ar(lower)alkenoyl (e.g. methylcarbamoylcinnamoylglycyl,ethylcarbamoylcinnamoylglycyl, dimethylcarbamoylcinnamoylglycyl,propylcarbamoylcinnamoylglycyl, isopropylcarbamoylcinnamoylglycyl,diethylcarbamoylcinnamoylglycyl,N-methyl-N-ethylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with hydroxy(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.hydroxyethylcarbamoylcinnamoylglycyl,bis(hydroxyethyl)carbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with N- hydroxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl (e.g.N-hydroxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.), amino acidresidue substituted with loweralkoxy(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.methoxymethylcarbamoylcinnamoylglycyl,methoxyethylcarbamoylcinnamoylglycyl,bis(methoxyethyl)carbamoylcinnamoylglycyl,ethoxyethylcarbamoylcinnamoylglycyl,methoxypropylcarbamoylcinnamoylglycyl,bis(ethoxyethyl)carbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with N- lower alkoxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl (e.g.N-methoxyethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.), amino acidresidue substituted withheterocyclic(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.pyridylmethylcarbamoylcinnamoylglycyl,furylmethylcarbamoylcinnamoylglycyl,thienylmethylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with N- heterocyclic(lower)alkyl-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl (e.g.N-pyridylmethyl-N-methylcarbamoylcinnamoylglycyl, etc.), amino acidresidue substituted with heterocycliccarbamoyl-ar(lower)alkenoyl (e.g.morpholinylcarbamoylcinnamoylglycyl, thienylcarbamoylcinnamoylglycyl,pyridylcarbamoylcinnamoylglycyl, pyrimidinylcarbamoylcinnamoylglycyl,tetrazolylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with optionally substitutedheterocycliccarbonyl-ar(lower)alkenoyl (e.g.morpholinocarbonylcinnamoylglycyl, pyrrolidinylcarbonylcinnamoylglycyl,piperidinocarbonylcinnamoylglycyl,tetrahydropyridylcarbonylcinnamoylglycyl,methylpiperazinylcarbonylcinnamoylglycyl, etc.), amino acid residuesubstituted with lower alkenylcarbamoyl-ar(lower)alkenoyl (e.g.vinylcarbamoylcinnamoylglycyl, allylcarbamoylcinnamoylglycyl,methylpropenylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with lower alkynylcarbamoyl-ar(lower)alkenoyl (e.g.ethynylcarbamoylcinnamoylglycyl, propynylcarbamoylcinnamoylglycyl,etc.), amino acid residue substituted withamino(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.aminomethylcarbamoylcinnamoylglycyl, aminoethylcarbamoylcinnamoylglycyl,etc.), amino acid residue substituted with loweralkylamino(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.methylaminomethylcarbamoylcinnamoylglycyl,methylaminoethylcarbamoylcinnamoylglycyl,ethylaminoethylcarbamoylcinnamoylglycyl,dimethylaminoethylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with loweralkylcarbamoyloxy(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.methylcarbamoyloxymethylcarbamoylcinnamoylglycyl,methylcarbamoyloxyethylcarbamoylcinnamoylglycyl,ethylcarbamoyloxyethylcarbamoylcinnamoylglycyl,dimethylcarbamoyloxyethylcarbamoylcinnamoylglycyl, etc.), amino acidresidue substituted with loweralkylcarbamoyl(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.methylcarbamoylmethylcarbamoylcinnamoylglycyl,methylcarbamoylethylcarbamoylcinnamoylglycyl,ethylcarbamoylethylcarbamoylcinnamoylglycyl,dimethylcarbamoylethylcarbamoylcinnamoylglycyl, etc.), amino acidresidue substituted with loweralkoxycarbonyl(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.methoxycarbonylmethylcarbamoylcinnamoylglycyl,methoxycarbonylethylcarbamoylcinnamoylglycyl,ethoxycarbonylmethylcarbamoylcinnamoylglycyl,ethoxycarbonylethylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with carboxy(lower)alkylcarbamoyl-ar(lower)alkenoyl (e.g.carboxymethylcarbamoylcinnamoylglycyl,carboxyethylcarbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with loweralkylcarbamoyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl (e.g.(methylcarbamoylphenethyl)carbamoylcinnamoylglycyl,(ethylcarbamoyl-phenethyl)carbamoylcinnamoylglycyl, etc.), amino acidresidue substituted with loweralkoxycarbonyl-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl (e.g.(methoxycarbonylphenethyl)carbamoylcinnamoylglycyl,(ethoxycarbonyl-phenethyl)carbamoylcinnamoylglycyl, etc.), amino acidresidue substituted withcarboxy-ar(lower)alkyl!carbamoyl-ar(lower)alkenoyl (e.g.(carboxy-phenethyl)carbamoylcinnamoylglycyl, etc.), amino acid residuesubstituted with N- lower alkylcarbamoyl(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl (e.g.N-(methylcarbamoylmethyl)-N-methylcarbamoylcinnamoylglycyl,N-(methylcarbamoylethyl)-N-methylcarbamoylcinnamoylglycyl,N-(ethylcarbamoylethyl) -N-methylcarbamoylcinnamoylglycyl,N-(dimethylcarbamoylethyl)-N-methylcarbamoylcinnamoylglycyl, etc.),amino acid residue substituted with N- loweralkoxycarbonyl(lower)alkyl!-N-(lower alkyl)carbamoyl-ar(lower)alkenoyl(e.g. N-methoxycarbonylmethyl-N-methylcarbamoylcinnamoylglycyl,N-methoxycarbonylethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxycarbonylmethyl-N-methylcarbamoylcinnamoylglycyl,N-ethoxycarbonylethyl-N-methylcarbamoylcinnamoylglycyl, etc.), aminoacid residue substituted with N-carboxy(lower)alkyl!-N-(loweralkyl)carbamoyl-ar(lower)alkenoyl (e.g.N-carboxymethyl-N-methylcarbamoylcinnamoylglycyl,N-carboxyethyl-N-methylcarbamoylcinnamoylglycyl, etc.) amino acidresidue substituted with arylcarbamoyl-ar(lower)alkenoyl (e.g.phenylcarbamoylcinnamoylglycyl, naphthylcarbamoylcinnamoylglycyl, etc.),amino acid residue substituted with ar(lower)alkynoyl (e.g.phenylpropioloylglycyl, etc.), amino acid residue substituted withheterocyclic(lower)alkenoyl (e.g. morpholinylacryloylglycyl,pyridylacryloylglycyl, thienylacryloylglycyl, etc.), amino acid residuesubstituted with amino-heterocyclic(lower)alkenoyl (e.g.aminopyridylacryloylglycyl, etc.), amino acid residue substituted withlower alkylamino-heterocyclic(lower)alkenoyl (e.g.methylaminopyridylacryloylglycyl, dimethylaminopyridylacryloylglycyl,etc.), amino acid residue substituted with loweralkanoylamino-heterocyclic(lower)alkenoyl (e.g.acetylaminopyridylacryloylglycyl, propionylaminopyridylacryloylglycyl,etc.), amino acid residue substituted with loweralkenoylamino-heterocyclic(lower)alkenoyl (e.g.acryloylaminopyridylacryloylglycyl, crotonoylaminopyridylacryloylglycyl,etc.), amino acid residue substituted withheterocyclic(lower)alkanoylamino-heterocyclic(lower)alkenoyl (e.g.pyridylacetylaminopyridylacryloylglycyl,thienylacetylaminopyridylacryloylglycyl, etc.), amino acid residuesubstituted with heterocycliccarbonylamino-heterocyclic(lower)alkenoyl(e.g. pyridylcarbonylaminopyridylacryloylglycyl,furylcarbonylaminopyridylacryloylglycyl, etc.), amino acid residuesubstituted with loweralkanoylamino(lower)alkanoylamino-heterocyclic(lower)alkenoyl (e.g.acetylamincacetylaminopyridylacryloylglycyl,acetylaminopropionylaminopyridylacryloylglycyl, etc.), amino acidresidue substituted with loweralkoxycarbonyl(lower)alkanoylamino-heterocyclic(lower)alkenoyl (e.g.ethoxycarbonylacetylaminopyridylacryloylglycyl,ethoxycarbonylpropionylaminopyridylacryloylglycyl, etc.), amino acidresidue substituted with loweralkoxy(lower)alkanoylamino-heterocyclic(lower)alkenoyl (e.g.methoxyacetylaminopyridylacryloylglycyl,methoxypropionylaminopyridylacryloylglycyl,ethoxypropionylaminopyridylacryloylglycyl, etc.), amino acid residuesubstituted with lower alkylureido-heterocyclic(lower)alkenoyl (e.g.methylureidopyridylacryloylglycyl, etc.), amino acid residue substitutedwith carboxy-heterocyclic(lower)alkenoyl (e.g.carboxypyridylacryloylglycyl, etc.), amino acid residue substituted withlower alkoxycarbonyl-heterocyclic(lower)alkenoyl (e.g.ethoxycarbonylpyridylacryloylglycyl, etc.), amino acid residuesubstituted with lower alkylcarbamoyl-heterocyclic(lower)alkenoyl (e.g.methylcarbamoylpyridylacryloylglycyl,ethylcarbamoylpyridylacryloylglycyl,dimethylcarbamoylpyridylacryloylglycyl,diethylcarbamoylpyridylacryloylglycyl,isopropylcarbamoylpyridylacryloylglycyl,N-ethyl-N-methylcarbamoylpyridylacryloylglycyl, etc.), amino acidresidue substituted with loweralkoxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl (e.g.methoxymethylcarbamoylpyridylacryloylglycyl,methoxyethylcarbamoylpyridylacryloylglycyl,methoxypropylcarbamoylpyridylacryloylglycyl,ethoxyethylcarbamoylpyridylacryloylglycyl,bis(methoxyethyl)carbamoylpyridylacryloylglycyl, etc.), amino acidresidue substituted withhydroxy(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl (e.g.hydroxymethylcarbamoylpyridylacryloylglycyl,hydroxyethylcarbamoylpyridylacryloylglycyl,bis(hydroxyethyl)carbamoylpyridylacryloylglycyl, etc.), amino acidresidue substituted withheterocycliccarbamoyl-heterocyclic(lower)alkenoyl (e.g.pyridylcarbamoylpyridylacryloylglycyl,morpholinylcarbamoylpyridylacryloylglycyl,thienylcarbamoylpyridylacryloylglycyl,pyrimidinylcarbamoylpyridylacryloylglycyl, etc.), amino acid residuesubstituted withheterocyclic(lower)alkylcarbamoyl-heterocyclic(lower)alkenoyl (e.g.pyridylmethylcarbamoylpyridylacryloylglycyl,furylmethylcarbamoylpyridylacryloylglycyl,thienylmethylcarbamoylpyridylacryloylglycyl, etc.), amino acid residuesubstituted with heterocycliccarbonyl-heterocyclic(lower)alkenoyl (e.g.morpholinocarbonylpyridylacryloylglycyl,pyrrolidinylcarbonylpyridylacryloylglycyl,piperidinocarbonylpyridylacryloylglycyl, etc.), amino acid residuesubstituted with lower alkenylcarbamoyl-heterocyclic(lower)alkenoyl(e.g. vinylcarbamoylpyridylacryloylglycyl,allylcarbamoylpyridylacryloylglycyl, etc.), amino acid residuesubstituted with lower alkynylcarbamoyl-heterocyclic(lower)alkenoyl(e.g. ethylcarbamoylpyridylacryloylglycyl,propynylcarbamoylpyridylacryloylglycyl, etc.) amino acid residuesubstituted with heterocyclicthio(lower)alkanoyl (e.g.pyridylthioacetylglycyl, pyrimidinylthioacetylglycyl,imidazolylthiopropionylglycyl, etc.), amino acid residue substitutedwith optionally substituted heterocycliccarbonyl (e.g.morpholinocarbonylglycyl, indolylcarbonylglycyl,4-methyl-1-piperazinylcarbonylglycyl, etc.), amino acid residuesubstituted with cyclo(lower)alkylcarbonyl (e.g.cyclopropylcarbonylglycyl, cyclopentylcarbonylglycyl,cyclohexylcarbonylglycyl, cyclohexylcarbonylsarcosyl, etc.), amino acidresidue substituted with lower alkoxycarbonyl (e.g.methoxycarbonylglycyl, tert-butoxycarbonylglycyl,tert-butoxycarbonylsarcosyl, tert-butoxycarbonylalanyl, etc.), aminoacid residue substituted with aryloxycarbonyl (e.g.phenoxycarbonylglycyl, etc.), amino acid residue substituted witharoyl(lower)alkanoyl (e.g. phenyloxalylglycyl, benzoylpropionylglycyl,etc.), amino acid residue substituted with aroyl (e.g. benzoylglycyl,benzoylsarcosyl, naphthoylglycyl, benzoylalanyl, etc.), amino acidresidue substituted with nitro-aryloxycarbonyl (e.g.nitrophenyloxycarbonylglycyl, etc.), amino acid residue substituted withcarbamoyl (e.g. carbamoylglycyl, carbamoylalanyl, carbamoylsarcosyl,carbamoyl-β-alanyl, etc.), amino acid residue substituted with loweralkylcarbamoyl (e.g. methylcarbamoylglycyl, etylcarbamoylglycyl,propylcarbamoylglycyl, isopropylcarbamoylglycyl, pentylcarbamoylglycyl,methylcarbamoylsarcosyl, ethylcarbamoylalanyl,isopropylcarbamoyl-β-alanyl, etc.), amino acid residue substituted withlower alkoxycarbonyl(lower)alkylcarbamoyl (e.g.methoxycarbonylmethylcarbamoylglycyl,ethoxycarbonylmethylcarbamoylglycyl, etc.), amino acid residuesubstituted with lower alkenylcarbamoyl (e.g. vinylcarbamoylglycyl,allylcarbamoylglycyl, allylcarbamoylsarcosyl, etc.), amino acid residuesubstituted with cyclo(lower)alkylcarbamoyl (e.g.cyclopropylcarbamoylglycyl, cyclohexylcarbamoylglycyl,cyclohexylcarbamoylsarcosyl, etc.), amino acid residue substituted witharylcarbamoyl (e.g. phenylcarbamoylglycyl, naphthylcarbamoylglycyl,tolylcarbamoylglycyl, ethylphenylcarbamoylglycyl, phenylcarbamoylalanyl,phenylcarbamoylsarcosyl, etc.), amino acid residue substituted withlower alkoxy-arylcarbamoyl (e.g. methoxyphenylcarbamoylglycyl,ethoxyphenylcarbamoylglycyl, methoxyphenylcarbamoylalanyl, etc.), aminoacid residue substituted with halo(lower)alkyl-arylcarbamoyl (e.g.trifluoromethylphenylcarbamoylglycyl,trifluoromethylphenylcarbamoylalanyl,trifluoromethylphenylcarbamoylsarcosyl, etc.), amino acid residuesubstituted with halo-arylcarbamoyl (e.g. chlorophenylcarbamoylglycyl,fluorophenylcarbamoylglycyl, fluorophenylcarbamoylalanyl, etc.), aminoacid residue substituted with lower alkanoyl-arylcarbamoyl (e.g.acetylphenylcarbamoylglycyl, propionylphenylcarbamoylalanyl, etc.),amino acid residue substituted with hydroxy(lower)alkyl-arylcarbamoyl(e.g. hydroxymethylphenylcarbamoylglycyl,hydroxyethylphenylcarbamoylglycyl, hydroxyethylphenylcarbamoylalanyl,etc.), amino acid residue substituted withheterocycliccarbonyl-arylcarbamoyl (e.g.morpholinocarbonylphenylcarbamoylglycyl,piperidinocarbonylphenylcarbamoylglycyl,thiomorpholinocarbonylphenylcarbamoylalanyl,piperazinylcarbonylphenylcarbamoylglycyl,pyrrolidinylcarbonylphenylcarbamoylglycyl,1,2,3,6-tetrahydropyridylcarbonylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with carboxy-arylcarbamoyl (e.g.carboxyphenylcarbamoylglycyl, etc.), amino acid residue substituted withlower alkoxycarbonyl-arylcarbamoyl (e.g.methoxycarbonylphenylcarbamoylglycyl,ethoxycarbonylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with carbamoyl-arylcarbamoyl (e.g.carbamoylphenylcarbamoylglycyl, etc.), amino acid residue substitutedwith lower alkylcarbamoyl-arylcarbamoyl (e.g.methylcarbamoylphenylcarbamoylglycyl,ethylcarbamoylphenylcarbamoylglycyl,propylcarbamoylphenylcarbamoylglycyl,dimethylcarbamoylphenylcarbamoylglycyl,diethylcarbamoylphenylcarbamoylglycyl,N-ethyl-N-methylcarbamoylphenylcarbamoylglycyl,N-isopropyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with nitro-arylcarbamoyl (e.g.nitrophenylcarbamoylglycyl, etc.), amino acid residue substituted withcyano-arylcarbamoyl (e.g. cyanophenylcarbamoylglycyl, etc.), amino acidresidue substituted with amino-arylcarbamoyl (e.g.aminophenylcarbamoylglycyl, etc.), amino acid residue substituted withlower alkylamino-arylcarbamoyl (e.g. methylaminophenylcarbamoylglycyl,ethylaminophenylcarbamoylglycyl, dimethylaminophenylcarbamoylglycyl,etc.), amino acid residue substituted with loweralkanoylamino-arylcarbamoyl (e.g. acetylaminophenylcarbamoylglycyl,propionylaminophenylcarbamoylglycyl, etc.), amino acid residuesubstituted with N-(lower alkanoyl)-N-(lower alkyl)amino-arylcarbamoyl(e.g. N-acetyl-N-methylaminophenylcarbamoylglycyl,N-propionyl-N-methylaminophenylcarbamoylglycyl, etc.), amino acidresidue substituted with lower alkoxy(lower)alkanoylamino-arylcarbamoyl(e.g. methoxyacetylaminophenylcarbamoylglycyl,methoxypropionylaminophenylcarbamoylglycyl, etc.), amino acid residuesubstituted with lower alkoxycarbonyl(lower)alkanoylamino-arylcarbamoyl(e.g. ethoxycarbonylacetylaminophenylcarbamoylglycyl,methoxycarbonylpropionylaminophenylcarbamoylglycyl, etc.!, amino acidresidue substituted with carboxyamino-arylcarbamoyl (e.g.carboxyaminophenylcarbamoylglycyl, etc.), amino acid residue substitutedwith lower alkoxycarbonylamino-arylcarbamoyl (e.g.ethoxycarbonylaminophenylcarbamoylglycyl, etc.), amino acid residuesubstituted with aroylamino-arylcarbamoyl (e.g.benzoylaminophenylcarbamoylglycyl, etc.), amino acid residue substitutedwith heterocycliccarbonylamino-arylcarbamoyl (e.g.pyridylcarbonylaminophenylcarbamoylglycyl,furylcarbonylaminophenylcarbamoylglycyl,morpholinocarbonylaminophenylcarbamoylglycyl, etc.), amino acid residuesubstituted with heterocyclic(lower)alkanoylamino-arylcarbamoyl (e.g.pyridylacetylaminophenylcarbamoylglycyl,thienylacetylaminophenylcarbamoylglycyl, etc.), amino acid residuesubstituted with ureido-arylcarbamoyl (e.g. ureidophenylcarbamoylglycyl,etc.), amino acid residue substituted with loweralkylureido-arylcarbamoyl (e.g. methylureidophenylcarbamoylglycyl,ethylureidophenylcarbamoylglycyl, etc.), amino acid residue substitutedwith hydroxyimino(lower)alkyl-arylcarbamoyl (e.g.hydroxyiminoethylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with lower alkoxyimino(lower)alkyl-arylcarbamoyl (e.g.methoxyiminoethylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with lower alkylhydrazono(lower)alkyl-arylcarbamoyl (e.g.methylhydrazonoethylphenylcarbamoylglycyl,dimethylhydrazonoethylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with optionally substituted heterocyclic-arylcarbamoyl (e.g.oxopyrrolidinylphenylcarbamoylglycyl,oxopiperidinophenylcarbamoylglycyl,dioxopyrrolidinylphenylcarbamoylglycyl,oxcoxazolidinylphenylcarbamoylglycyl, pyrrolylphenylcarbamoylglycyl,etc.), amino acid residue substituted withheterocycliccarbonyl-arylcarbamoyl having lower alkyl (e.g.methylpiperazinylcarbonylphenylcarbamoylglycyl,ethylpiperazinylcarbonylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with heterocycliccarbonyl-arylcarbamoyl having aryl (e.g.phenylpiperazinylcarbonylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having aheterocyclic group (e.g.pyridylpiperazinylcarbonylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having loweralkanoyl (e.g. acetylpiperazinylcarbonylphenylcarbamoylglycyl, etc.),amino acid residue substituted with heterocycliccarbonyl-arylcarbamoylhaving lower alkoxycarbonyl (e.g.ethoxycarbonylpiperazinylcarbonylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with heterocycliccarbonyl-arylcarbamoyl havinglower alkylamino (e.g.methylaminopiperazinylcarbonylphenylcarbamoylglycyl,dimethylaminopiperidinocarbonylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with heterocycliccarbonyl-arylcarbamoyl having loweralkylcarbamoyl (e.g.methylcarbamoylpiperazinylcarbonylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with hydroxy(lower)alkylcarbamoyl-arylcarbamoyl(e.g. hydroxymethylcarbamoylphenylcarbamoylglycyl,hydroxyethylcarbamoylphenylcarbamoylglycyl,bis(hydroxyethyl)carbamoylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with N- hydroxy(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl (e.g.N-(hydroxyethyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with loweralkoxy(lower)alkylcarbamoyl-arylcarbamoyl (e.g.methoxymethylcarbamoylphenylcarbamoylglycyl,methoxyethylcarbamoylphenylcarbamoylglycyl,ethoxyethylcarbamoylphenylcarbamoylglycyl,bis(methoxyethyl)carbamoylphenylcarbamoylglycyl,bis(ethoxyethyl)carbamoylphenylcarbamoylglycyl etc.), amino acid residuesubstituted with N- lower alkoxy(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl (e.g.N-(methoxyethyl)-N-methylcarbamoylphenylcarbamoylglycyl,N-(methoxypropyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with loweralkylamino(lower)alkylcarbamoyl-arylcarbamoyl (e.g.methylaminoethylcarbamoylphenylcarbamoylglycyl,dimethylaminoethylcarbamoylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with N- lower alkylamino(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl (e.g.N-(dimethylaminoethyl)-N-methylcarbamoylphenylcarbamoylglycyl,N-(dimethylaminopropyl)-N-methylcarbamoylphenylcarbamoylglycyl, etc.),amino acid residue substituted with heterocycliccarbamoyl-arylcarbamoyl(e.g. morpholinylcarbamoylphenylcarbamoylglycyl,thienylcarbamoylphenylcarbamoylglycyl,pyridylcarbamoylphenylcarbamoylglycyl,pyrimidinylcarbamoylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with N-(heterocyclic)-N-(lower alkyl)carbamoyl-arylcarbamoyl(e.g. N-pyridyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.), aminoacid residue substituted withheterocyclic(lower)alkylcarbamoyl-arylcarbamoyl (e.g.pyridylmethylcarbamoylphenylcarbamoylglycyl,pyridylethylcarbamoylphenylcarbamoylglycyl,thienylmethylcarbamoylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with N- heterocyclic(lower)alkyl!-N-(loweralkyl)carbamoyl-arylcarbamoyl (e.g.N-pyridylmethyl-N-methylcarbamoylphenylcarbamoylglycyl, etc.), aminoacid residue substituted with N- heterocyclic(lower)alkyl!-N- loweralkoxy(lower)alkyl!carbamoyl-arylcarbamoyl (e.g.N-pyridylmethyl-N-methoxyethylcarbamoylphenylcarbamoylglycyl, etc.),amino acid residue substituted with arylcarbamoyl-arylcarbamoyl (e.g.phenylcarbamoylphenylcarbamoylglycyl, etc.), amino acid residuesubstituted with lower alkylaminoarylcarbamoyl-arylcarbamoyl (e.g.dimethylaminophenylcarbamoylphenylcarbamoylglycyl, etc.), amino acidresidue substituted with arylthiocarbamoyl (e.g.phenylthiocarbamoylglycyl, naphthylthiocarbamoylglycyl,phenylthiocarbamoylalanyl, phenylthiocarbamoylsarcosyl, etc.), aminoacid residue substituted with ar(lower)alkylcarbamoyl (e.g.benzylcarbamoylglycyl, benzylcarbamoylsarcosyl, benzylcarbamoylalanyl,etc.), amino acid residue substituted with aroylcarbamoyl (e.g.benzoylcarbamoylglycyl, etc.), amino acid residue substituted withheterocycliccarbamoyl (e.g. pyridylcarbamoylglycyl,pyridylcarbamoylalanyl, pyridylcarbamoylsarcosyl,thienylcarbamoylglycyl, pyrazolylcarbamoylglycyl,pyrimidinylcarbamoylglycyl, quinolylcarbamoylglycyl,isoquinolylcarbamoylglycyl, etc.), amino acid residue substituted withheterocyclic(lower)alkylcarbamoyl (e.g. benzylglycylglycyl, etc.) andamino acid residue having amino acid residue substituted with phthaloyl(e.g. phthaloylglycylglycyl, etc.), etc.}, etc.!;

acyl such as carboxy, esterified carboxy e.g. lower alkoxycarbonyl (e.g.methoxycarbonyl, ethoxycarbonyl, tert-butoxycarbonyl, etc.), etc.!,aroyl e.g. benzoyl, etc.! and heterocycliccarbonyl which may besubstituted lower alkyl e.g. morpholinocarbonyl,4-methyl-1-piperazinylcarbonyl, etc.!,

lower alkylaminomethyleneamino such as dimethylaminomethyleneamino anddiethylaminomethyleneamino,

heterocyclic group such as pyrrolidinyl,

heterocyclic group substituted with oxo such as pyrrolidonyl, and/or

N-methylpyrrolidinylideneamino; or heterocyclic group such as thienyl,benzofuryl, benzothiazolinyl, benzothiazinyl and piperonyl, each ofwhich may be substituted with substituent(s) such as halogen e.g.fluorine, chlorine, bromine and iodine!, lower alkyl e.g. methyl, ethyl,propyl, isopropyl, etc.!, halo-aryl e.g. chlorophenyl, etc.! and/or oxo;

Q is O or N--R¹¹, in which R¹¹ is hydrogen; or acyl such as loweralkanoyl e.g. formyl, acetyl, propionyl, butyryl, etc.!;

A is lower alkylene such as methylene, ethylene, methylmethylene andpropylene.

Suitable "a leaving group" may be a conventional acid residue such ashalogen e.g. fluoro, chloro, bromo and iodo!, arenesulfonyloxy e.g.benzenesulfonyloxy, tosyloxy, etc.!, alkanesulfonyloxy e.g. mesyloxy,ethanesulfonyloxy, etc.!, and the like.

Suitable pharmaceutically acceptable salts of the object compound I! areconventional non-toxic salts and include a metal salt such as an alkalimetal salt e.g. sodium salt, potassium salt, etc.! and an alkaline earthmetal salt e.g. calcium salt, magnesium salt, etc.!, an ammonium salt,an organic base salt e.g. trimethylamine salt, triethylamine salt,pyridine salt, picoline salt, dicyclohexylamine salt,N,N'-dibenzylethylenediamine salt, etc.!, an organic acid addition salte.g. formate, acetate, trifluoroacetate, maleate, tartrate, oxalate,methanesulfonate, benzenesulfonate, toluenesulfonate, etc.!, aninorganic acid addition salt e.g. hydrochloride, hydrobromide, sulfate,phosphate, etc.!, a salt with an amino acid e.g. arginine salt, asparticacid salt, glutamic acid salt, etc.!, an intramolecular salt and thelike.

With respect to the salts of the compounds Ia! to Ig! in the Processes 3to 6, it is to be noted that these compounds are included within thescope of the compound I!, and accordingly the suitable examples of thesalts of these compounds are to be referred to those as exemplified forthe object compound I!.

The processes for preparing the object compound I! are explained indetail in the following.

Process 1

The compound I! or its salt can be prepared by halogenating a compoundII! or its salt.

Suitable salts of the compound II! may be the same as those exemplifiedfor the compound I!.

The halogenation is carried out in the presence of a halogenating agent.

Suitable halogenating agents of this reaction may include conventionalones such as N-halosuccinimide e.g. N-chlorosuccinimide,N-bromosuccinimide, etc.!, and the like. These halogenating agents maybe selected according to the kind of the starting compound II! to beused.

This reaction is usually carried out in a conventional solvent such aschloroform, methylene chloride, carbon tetrachloride, dimethylformamide,methanol, ethanol, dioxane, or the like.

The reaction temperature is not critical, and the reaction is usuallycarried out at ambient temperature or under warming or heating.

Process 2

The object compound I! or its salt can be prepared by reacting acompound III! or its salt with a compound IV! or its salt.

Suitable salts of the compounds III! and IV! may be the same as thoseexemplified for the compound I!.

The reaction is preferably carried out in the presence of a base such asalkali metal e.g. lithium, sodium, potassium, etc.!, the hydroxide orcarbonate or bicarbonate thereof e.g. sodium hydroxide, potassiumcarbonate, potassium bicarbonate, etc.!, alkali metal alkoxide e.g.sodium methoxide, sodium ethoxide, potassium tert-butoxide, etc.!, orthe like.

This reaction is usually carried out in a conventional solvent such astetrahydrofuran, dioxane, N,N-dimethylformamide, acetone, or the like.The reaction temperature is not critical, and the reaction is usuallycarried out under cooling to heating.

Process 3

The object compound Ib! or its salt can be prepared by acylating acompound Ia! or its salt.

The acylation is carried out in the presence of an acylating agent.

Suitable acylating agents are the corresponding carboxylic acid orsulfonic acid compounds, which are represented by the formula: R--OHwherein R is acyl, and reactive derivatives thereof, and thecorresponding isocyanate or isothiocyanate compounds.

As suitable said reactive derivatives, there may be mentioned acidhalides, acid anhydrides, active amides and active esters. Suitableexamples are acid halides such as acid chloride and acid bromide, mixedacid anhydrides with various acids e.g. substituted phosphoric acid suchas dialkyl phosphoric acid, sulfuric acid, aliphatic carboxylic acid,aromatic carboxylic acid, etc.!, symmetric acid anhydrides, activeamides with various imidazoles, and active esters such as p-nitrophenylester and N-hydroxysuccinimide ester. The kind of such reactivederivatives can be selected depending on the kind of acyl group to beintroduced.

The reaction is usually carried out in a conventional solvent, such asmethylene chloride, chloroform, pyridine, dioxane, tetrahydrofuran,N,N-dimethylformamide, or the like. In case that the acylating agent isliquid, it can also be used as a solvent. In case that the carboxylicacid or sulfonic acid compounds are used as acylating agent in the freeacid form or salt form, it is preferable to carry out the reaction inthe presence of a conventional condensing agent such asN,N'-dicyclohexylcarbodiimide or the like.

The reaction temperature is not critical and the reaction can be carriedout under cooling, at ambient temperature, or under heating.

This reaction is preferably carried out in the presence of aconventional inorganic base or in the presence of a conventional organicbase.

Process 4

The object compound Id! or its salt can be prepared by acylating acompound Ic! or its salt.

This reaction can be carried out in substantially the same manner asProcess 3, and therefore the reaction mode and reaction condition ofthis reaction are to be referred to those explained in Process 3.

Process 5

The object compound Ie! or its salt can be prepared by alkylating acompound Ic! or its salt.

This alkylation is carried out in the presence of an alkylating agent.

Suitable alkylating agents to be used in this reaction may be halidecompounds such as lower alkyl halide e.g. methyl iodide, ethyl iodide,propyl iodide, butyl iodide, etc.! or ar(lower)alkyl halide e.g.benzylbromide, etc.!, aldehyde compounds, ketone compounds, or the like.

When halide compounds are used as alkylating agents, the reaction isusually carried out in the presence of a base such as an alkali metale.g. sodium, potassium, etc.!, an alkaline earth metal e.g. magnesium,calcium, etc.!, the hydride or hydroxide thereof, alkali metal alkoxidee.g. sodium methoxide, sodium ethoxide, potassium tert-butoxide, etc.!,or the like.

When aldehyde compounds or ketone compounds are used as alkylatingagents, the reaction is usually carried out under acidic condition inthe presence of reducing agent such as formic acid, sodiumcyanoborohydride, or the like.

The reaction of this process is usually carried out in a conventionalsolvent such as methanol, ethanol, tetrahydrofuran, dioxane,N,N-dimethylformamide, dimethyl sulfoxide, or the like. And in case thatthe above-mentioned alkylating agent is in liquid, it can be also usedas a solvent.

The reaction temperature is not critical, and the reaction is usuallycarried out under cooling, at ambient temperature or under warming orheating.

Process 6

The object compound Ig! or its salt can be prepared by reacting acompound If! or its reactive derivative at the carboxy group or a saltthereof with a comound IX! or its reactive derivative at the amino groupor a salt thereof.

Suitable reactive derivative at the carboxy group of the comopund If!may include an acid halide, an acid anhydride, an activated amide, anactivated ester, and the like. Suitable examples of the reactivederivatives may be an acid chloride; an acid azide; a mixed acidanhydride with an acid such as dialkylphosphoric acid, sulfuric acidaliphatic carboxylic acid or aromatic carboxylic acid; a symmetricalacid anhydride; an activated amide with imidazole; or an activated estere.g. p-nitrophenyl ester, etc.!. These reactive derivatives canoptionally be selected from them according to the kind of the compoundIf! to be used.

Suitable reactive derivative at the amino group of the comopund IX! maybe a silyl derivative formed by the reaction of the compound IX! with asilyl compound such as bis(trimethylsilyl)acetamide ormono(trimethylsilyl)acetamide, or the like.

Suitable salts of the comound IX! and its reactive derivative can bereferred to the organic or inorganic acid addition salts as exemplifiedfor the comound I!.

This reaction can be carried out in substantially the same manner asProcess 3 and therefore the reaction mode and reaction condition of thisreaction are to be referred to those explained in Process 3.

The starting compounds II! or III! or salts thereof can be prepared bythe following reaction schemes. ##STR6## wherein R¹, R², R³, R⁴, Q, Aand X are each as defined above.

The above-mentioned processes for preparing the starting compounds areexplained in detail in the following.

Process A

The compound II! or its salt can be prepared by reacting a compound V!or its salt with a compound VI! or its salt.

Suitable salts of the compounds V! and VI! may be the same as thoseexemplified for the compound I!.

This reaction is usually carried out in a conventional solvent such asmethanol, ethanol, acetonitrile, N,N-dimethylformamide, dimethylsulfoxide or the like.

The reaction temperature is not critical, and the reaction is usuallycarried out at ambient temperature or under warming or heating.

Process B

The compound V! or its salt can be prepared by reacting a compound VII!or its salt with a compound IV! or its salt.

Suitable salts of the compound VII! are the same as those exemplifiedfor the compound I!.

This reaction can be carried out in substantially the same manner asProcess 2, and therefore the reaction mode and reaction condition ofthis reaction are to be referred to those explained in Process 2.

Process C

The compound II! or its salt can be prepared by reacting a compoundVIII! or its salt with a compound IV! or its salt.

Suitable salts of the compound VIII! are the same as those exemplifiedfor the compound I!.

This reaction can be carried out in substantially the same manner asProcess 2, and therefore the reaction mode and reaction condition ofthis reaction are to be referred to those explained in Process 2.

Process D

The compound III! or its salt can be prepared by halogenating a compoundVIII! or its salt.

This reaction can be carried out in substantially the same manner asProcess 1, and therefore the reaction mode and reaction condition ofthis reaction are to be referred to those explained in Process 1.

The object compound I! and the starting compounds can also be preparedby the methods of Examples and Preparations mentioned below or similarmanners thereto or conventional manners.

The compounds obtained by the above processes can be isolated andpurified by a conventional method such as pulverization,recrystallization, chromatography, reprecipitation or the like.

It is to be noted that the compound I! and the other compounds mayinclude one or more stereoisomers and geometrical isomers due toasymmetric carbon atoms and double bonds, and all of such isomers andmixture thereof are included within the scope of this invention.

The object compound I! and pharmaceutically acceptable salts thereofpossess strong activities as bradykinin antagonists, and are useful forthe treatment and/or the prevention of bradykinin or its analoguesmediated diseases such as allergy, inflammation, autoimmune disease,shock, pain, or the like, and more particularly for the preventionand/or the treatment of asthma, cough, bronchitis, rhinitis, rhinorrhea,obstructive pulmonary disease e.g. pulmonary emphysema, etc.!,expectoration, pneumonitis, systemic inflammatory response syndrome(SIRS), septic shock, endotoxin shock, anaphylactic shock, adultrespiratory distress syndrome, disseminated intravascular coagulopathy,arthritis, rheumatism, osteoarthritis, lumbago, inflammation-inducedbone resorption, conjunctivitis, vernal conjunctivitis, uveitis, iritis,iridocyclitis, headache, migraine, toothache, backache, superficialpain, cancerous pain, postoperative pain, tenalgia, trauma e.g. wound,burn, etc.!, rash, erythema, eczema or dermatitis e.g. contactdermatitis, atopic dermatitis, etc.!, urticaria, herpes, itching,psoriasis, lichen, inflammatory bowel disease e.g. ulcerative colitis,Crohn's disease, etc.!, diarrhea, hepatitis, pancreatitis, gastritis,esophagitis, food allergy, ulcer, irritable bowel syndrome, nephritis,angina, periodontitis, edema, hereditary angioneurotic edema, cerebraledema, low blood pressure, thrombosis, myocardial infarction, cerebralvasospasm, congestion, coagulation, gout, central nervous system injury,premature labor, arteriosclerosis, postgastrectomy dumping syndrome,carcinoid syndrome, altered sperm mobility, diabetic neuropathy,neuralgia, graft rejection in transplantation, or the like, in humanbeing or animals.

And further, it is known that bradykinin relates to the release ofmediators such as prostaglandins, leukotrienes, tachykinins, histamine,thromboxanes, or the like, so the compound I! is expected to be usefulfor the prevention and/or the treatment of such mediators mediateddiseases.

In order to illustrate the usefulness of the object compound I!, thepharmacological test data of some representative compounds of thecompound I! are shown in the following.

³ H-Bradykinin Receptor Binding (i) Test Method

(a) Crude Ileum Membrane Preparation

Male Hartly strain guinea pigs were sacrificed by decapitation. Theileum was removed and homogenized in buffer (50 mMtrimethylaminoethanesulfonic acid (TES), 1 mM 1,10-phenanthroline pH6.8). The homogenate was centrifuged (1000×g, 20 minutes) to removetissue clumps and the supernatant was centrifuges (100,000×g, 60minutes) to yield a pellet. The pellet was resuspended in buffer (50 mMTES, 1 mM 1,10-phenanthroline, 140 mg/l bacitracin, 1 mM dithiothreiol,0.1% bovine serum albumin pH 6.8) and homogenized with a glass-teflonhomogenizer to yield suspension which was referred to as crude membranesuspension. The obtained membrane suspension was stored at -80° C. untiluse.

(b) ³ H-Bradykinin Binding to the Membrane

The frozen crude membrane suspension was thawed. In binding assays, ³H-Bradykinin (0.06 nM) and drug (1×10⁻⁵ M) were incubated with 50 μl ofthe membrane suspension at room temperature for 60 minutes in a finalvolume of 250 μl. Separation of receptor-bound from free ³ H-Bradykininis achieved by immediate filtration under vacuum and washed three timeswith 5 ml of ice-cold buffer (50 mM Tris-HCl pH 7.5). Non-specificbinding was defined as binding in the presence of 0.1 μM Bradykinin. Theradioactivity retained on rinsed filters was determined by aliquid-scintillation counter.

(ii) Test Results

    ______________________________________                                        Test Compound                                                                             Inhibition % of .sup.3 H-Bradykinin                               (Example No.)                                                                             binding (concentration: 1 × 10.sup.-5 M)                    ______________________________________                                        35          99                                                                40-(21)     97                                                                47          100                                                               49          100                                                               60          100                                                               61-(1)      95                                                                61-(5)      99                                                                61-(7)      100                                                               61-(11)     98                                                                61-(13)     98                                                                61-(16)     100                                                               61-(18)     97                                                                61-(23)     100                                                               61-(28)     99                                                                61-(41)     100                                                               61-(51)     100                                                               61-(54)     100                                                               ______________________________________                                    

The effects of the compound I! on bradykinin-induced bronchoconstrictionand carrageenin-induced paw edema were measured according to similarmanners described in British Journal of Pharmacology, 102, 774-777(1991).

For therapeutic purpose, the compound I! and a pharmaceuticallyacceptable salt thereof of the present invention can be used in a formof pharmaceutical preparation containing one of said compounds, as anactive ingredient, in admixture with a pharmaceutically acceptablecarrier such as an organic or inorganic solid, semi-solid or liquidexcipient sutable for oral, parenteral such as intravenous,intramascular, subcutaneous or intraarticular, external such as topical,enteral, intrarectal, transvaginal, inhalant, ophthalmic, nasal orhypoglossal administration. The pharmaceutical preparations may becapsules, tablets, dragees, granules, suppositories, solution, lotion,suspension, emulsion, ointment, gel, cream, or the like. If desired,there may be included in these preparations, auxiliary substances,stabilizing agents, wetting or emulsifying agents, buffers and othercommonly used additives.

While the dosage of the compound I! will vary depending upon the age andcondition of the patient, an average single dose of about 0.1 mg, 1 mg,10 mg, 50 mg, 100 mg, 250 mg, 500 mg and 1000 mg of the compound I! maybe effective for preventing and/or treating the above-mentioneddiseases. In general, amounts between 0.1 mg/body and about 1,000mg/body may be administered per day.

The following Preparations and Examples are given for the purpose ofillustrating this invention.

Preparation 1

Concentrated sulfuric acid (2.8 ml) was added dropwise to 70% nitricacid (4.0 ml) in an ice-water bath. This mixture was added to a solutionof 2,4,6-trichlorobenzoic acid (5.13 g) in concentrated sulfuric acid(23 ml) dropwise for 20 minutes in an ice-water bath. The mixture wasstirred for 16 hours at ambient temperature and poured into ice-water(300 ml) slowly. This mixture was stirred for 1 hour at ambienttemperature. The precipitate was collected by vacuum filtration andwashed with water to give 2,4,6-trichloro-3-nitrobenzoic acid (5.26 g)as colorless fine crystals.

mp: 162°-164° C. p NMR (CDCl₃, δ): 5.72 (1H, br s), 7.60 (1H, s)

Preparation 2

To a solution of 2,6-dichloro-3-nitrotoluene (50 g) in acetic acid (400ml) and ethanol (200 ml) was added iron (67.8 g) and the mixture wasrefluxed for 1.5 hours under nitrogen atmosphere. The insoluble materialwas filtered off and the filtrate was concentrated. To the residue wasadded a saturated aqueous solution of sodium bicarbonate and the mixturewas extracted with ethyl acetate three times. The combined organiclayers were washed with a saturated aqueous solution of sodiumbicarbonate three times and brine, dried over magnesium sulfate, andconcentrated in vacuo to give 2,4-dichloro-3-methylaniline (41 g).

mp: 54°-56° C. p NMR (CDCl₃, δ): 2.45 (3H, s), 4.06 (2H, br s), 6.58(1H, d, J=9Hz), 7.07 (1H, d, J=9Hz)

Preparation 3

(1) To a mixture of 2,4-dichloro-6-mercapto-3-methylaniline (861 mg),sodium hydrogen carbonate (1.16 g), tetrahydrofuran (9 ml) and water (9ml) was added chloroacetyl chloride (0.36 ml) dropwise under anice-water bath cooling. The mixture was stirred under an ice-water bathcooling for 15 minutes and then heated under reflux for 1 hour. Thereaction mixture was cooled and poured into a mixture of dichloromethaneand brine. The aqueous layer and insoluble precipitate was extractedtwice with a mixture of dichloromethane and methanol (4:1, V/V). Theorganic layer and extracts were combined, dried over magnesium sulfateand evaporated in vacuo to give an yellow powder of2H-5,7-dichloro-6-methyl-1,4-benzothiazin-3(4H)-one (801 mg). Thispowder was used for the next step without further purification.

(2) To a solution of 2H-5,7-dichloro-6-methyl-1,4-benzothiazin-3(4H)-one(846 mg) in N,N-dimethylformamide (17 ml) was added sodium hydride (40%in oil, 150 mg) under an ice-water bath cooling. The mixture was stirredat ambient temperature for 30 minutes and then, methyl iodide (0.4 ml)was added thereto. After stirring for 30 minutes, the mixture waspartitioned between ethyl acetate and brine. The aqueous layer wasextracted with ethyl acetate. The organic layers were combined, driedover magnesium sulfate and evaporated in vacuo. The residue was purifiedby silica gel column chromatography (dichloromethane-n-hexane) followedby crystallization from n-hexane to give2H-5,7-dichloro-4,6-dimethyl-1,4-benzothiazin-3(4H)-one (590 mg) as paleyellow crystals.

mp: 98°-99° C. p NMR (CDCl₃, δ): 2.50 (3H, s), 3.35 (2H, s), 3.40 (3H,s), 7.39 (1H, s)

Preparation 4

To a solution of 2,4-dichloro-6-mercapto-3-methylaniline (2.08 g) indichloromethane (40 ml) was added 1,1'-carbonyldiimidazole (1.78 g) atambient temperature. The mixture was stirred for one hour at the sametemperature. The separated precipitate was collected by filtration,washed with dichloromethane, and dried to give4,6-dichloro-5-methyl-2-benzothiazolinone (1.40 g).

mp: >250° C. p NMR (DMSO-d₆, δ): 2.42 (3H, s), 7.26 (1H, s)

Preparation 5

The following compounds were obtained according to a similar manner tothat of Preparation 3-(2).

(1) 4,6-Dichloro-3.5-dimethyl-2-benzothiazolinone

mp: 120°-122° C. p NMR (CDCl₃, δ): 2.52 (3H, s), 3.87 (3H, s), 7.33 (1H,s)

(2) 4,6-Dichloro-3-ethyl-5-methyl-2-benzothiazolinone

mp: 101°-103° C. p NMR (CDCl₃, δ): 1.39 (3H, t, J=7.5Hz), 2.53 (3H, s),4.49 (2H, q, J=7.5Hz), 7.36 (1H, s)

Preparation 6

The following compounds were obtained according to similar manners tothose of Example 14 or 15 mentioned below.

(1) 3-Acetylamino-2,6-dichlorotoluene

mp: 118°-119° C. p NMR (CDCl₃, δ): 2.24 (3H, s), 2.49 (3H, s), 7.29 (1H,d, J=9Hz), 7.63 (1H, br s), 8.20 (1H, d, J=9Hz)

(2) 3-(4-Chlorobutyryl)amino-2,6-dichlorotoluene

mp: 103°-105° C. p NMR (CDCl₃, δ): 2.23 (2H, m), 2.49 (3H, s), 2.66 (2H,t, J=8Hz), 3.69 (2H, t, J=3Hz), 7.30 (1H, d, J=8Hz), 7.69 (1H, br s),8.19 (1H, d, J=8Hz)

(3) 3-Acetoxyacetylamino-2,6-dichlorotoluene

mp: 111°-112° C. p NMR (CDCl₃, δ): 2.25 (3H, s), 2.50 (3H, s), 4.73 (2H,s), 7.31, 8.27 (each 1H, d, J=9Hz), 8.52 1H, br s)

(4) 2,6-Dichloro-3-(phthalimidoacetyl)aminotoluene

mp: 245°-246° C. p NMR (CDCl₃, δ): 2.48 (3H., s), 4.59 (2H, s), 7.27(1H, d, J=9Hz), 7.70-7.96 (4H), 8.00 (1H, br s), 8.12 (1H, d, J=9Hz)

Preparation 7

The following compounds were obtained according to a similar manner tothat of Example 23 mentioned below.

(1) 3-(N-Acetyl-N-methylamino)-2,6-dichlorotoluene

mp: 118°-119° C. p NMR (CDCl₃, δ): 1.80 (3H, s), 2.53 (3H, s), 3.18 (3H,s), 7.10 (1H, d, J=9Hz), 7.38 (1H, d, J=9Hz)

(2) 3-(N-Acetoxyacetyl-N-methylamino)-2,6-dichlorotoluene

mp: 107°-108° C. p NMR (CDCl₃, δ): 2.13 (3H, s), 2.55 (3H, s), 3.20 (3H,s), 4.16, 4.44 (each 1H, d, J=15Hz), 7.19, 7.40 (each 1H, d, J=9Hz)

(3) 2,6-Dichloro-3- N-(phthalimidoacetyl) -N-methylamino!toluene

mp: 193°-194° C. p NMR (CDCl₃, δ): 2.58 (3H, s), 3.21 (3H, s), 4.10 (2H,s), 7.30 (1H, d, J=9Hz), 7.42 (1H, d, J=9Hz), 7.65-7.91 (4H)

Preparation 8

To a solution of 3-(4-chlorobutyryl)amino-2,6-dichlorotoluene (2.80 g)in N,N-dimethylformamide (30 ml) was added sodium hydride (60% oildispersion, 440 mg) in one portion at 5° C. The mixture was stirred for10 minutes at 5° C. and then for 2 hours at 60° C. The cooled mixturewas poured into ice water. The separated oil was extracted withdichloromethane. The organic layer was washed with water three times,dried, and concentrated in vacuo. The residue was purified by flashchromatography on silica gel to give1-(2,4-dichloro-3-methylphenyl)-2-pyrrolidinone (1.95 g).

mp: 77°-82° C. p NMR (CDCl₃, δ): 2.25 (2H, m), 2.50 (3H, s), 2.58 (2H,t, J=8Hz), 3.75 (2H, t, J=8Hz), 7.08 (1H, d, J=8Hz), 7.33 (1H, d, J=8Hz)

Preparation 9

A mixture of 4,6-dichloro-3,5-dimethyl-2-benzothiazolinone (1.30 g),N-bromosuccinimide (1.03 g),2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) (65 mg) anddichloromethane (26 ml) was heated under reflux for 2 hours.N-Bromosuccinimide (500 mg) was added therein and the mixture was heatedunder reflux for additional 4 hours. The reaction mixture was washedwith water twice and brine, dried over magnesium sulfate and evaporatedin vacuo. The residue was crystallized from diethyl ether to give5-bromomethyl-4,6-dichloro-3-methyl-2-benzothiazolinone (1.20 g) ascrystals.

mp: 142°-143° C. p NMR (CDCl₃, δ): 3.89 (3H, s), 4.82 (2H, s), 7.40 (1H,s)

Preparation 10

The following compounds were obtained according to a similar manner tothat of Preparation 9.

(1) 3-Bromomethyl-2,4-dichloro-N-trifluoroacetyl-N-methylaniline

NMR (CDCl₃, δ): 3.31 (3H, s), 4.78 (2H, s), 7.23 (1H, d, J=9Hz), 7.43(1H, d, J=9Hz)

(2) N-Acetyl-3-bromomethyl-2,4-dichloro-N-methylaniline

mp: 123° C. (dec.) p NMR (CDCl₃, δ): 1.81 (3H, s), 3.19 (3H, s), 4.79(2H, s), 7.22 (1H, d, J=9Hz), 7.43 (1H, d, J=9Hz)

(3) 1-(3-Bromomethyl-2,4-dichlorophenyl)-2-pyrrolidinone

mp: 106°-109° C. p NMR (CDCl₃, δ): 2.17-2.38 (2H, m), 2.59 (2H, t,J=8Hz), 3.79 (2H, t, J=6Hz), 4.77 (2H, s), 7.21, 7.40 (each 1H, d,J=9Hz)

(4) N-Acetoxyacetyl-3-bromomethyl-2,4-dichloro-N-methylaniline

mp: 92°-93° C. p NMR (CDCl₃, δ): 2.12 (3H, s), 3.21 (3H, s), 4.16, 4.44(each 1H, d, J=15Hz), 4.79 (2H, s) 7.31, 7.48 (each 1H, d, J=9Hz)

(5) 3-Bromomethyl-2,4-dichloro-N-methyl-N-(phthalimidoacetyl)aniline

mp: 211° C. (dec.) p NMR (CDCl₃, δ): 3.24 (3H, s), 4.09 (2H, s), 4.81(2H, s), 7.44 (1H, d, J=9Hz), 7.51 (1H, d, J=9Hz), 7.68-7.91 (4H)

(6) N,N-Di-(tert-butoxycarbonyl)-2,4-dichloro-3-bromomethylaniline

NMR (CDCl₃, δ): 1.40 (18H, s), 4.79 (2H, s), 7.13 (1H, d, J=9Hz), 7.35(1H, d, J=9Hz)

(7) 5-Bromomethyl-4,6-dichloro-3-ethyl-2-benzothiazolinone

mp: 120°-126° C. p NMR (CDCl₃, δ): 1.41 (3H, t, J=7.5Hz), 4.50 (2H, q,J=7.5Hz), 4.85 (2H, s), 7.42 (1H, s)

(8) 2H-6-Bromomethyl-5,7-dichloro-4-methyl-1,4-benzothiazin-3(4H)-one

NMR (CDCl₃, δ): 3.38 (2H, s), 3.42 (3H, s), 4.78 (2H, s), 7.44 (1H, s)

Preparation 11

To a solution of 2,4-dichloro-1-isopropoxybenzene (3.53 g) intetrahydrofuran (35 ml) was added n-butyl lithium solution (1.6 Molsolution in n-hexane, 11 ml) through a syringe at -78° C. After stirringfor one hour at -78° C., the mixture was poured into dry diethyl ether(50 ml) containing pulverized dry ice in a few minutes. After warming toambient temperature, the mixture was concentrated in vacuo. The residuewas partitioned between diethyl ether (50 ml) and aqueous 10% sodium.hydroxide solution (100 ml). The aqueous layer was adjusted to pH 2 with10% hydrochloric acid. The separated oil was extracted withdichloromethane. The extract was washed with water, dried, andevaporated under reduced pressure. The residue was crystallized fromn-hexane to give 2,6-dichloro-3-isopropoxybenzoic acid (3.0 g).

mp: 133°-138° C. p NMR (CDCl₃, δ): 1.39 (6H, d, J=6Hz), 4.55 (1H, m),6.95 (1H, d, J=10Hz), 7.29 (1H, d, J=10Hz)

Preparation 12

To a solution of 2,6-dichloro-3-isopropoxybenzoic acid (2.49 g) intetrahydrofuran (30 ml) was added borane-methyl sulfide complex (2 ml,10 Mol solution) through a syringe at ambient temperature. The mixturewas refluxed for half an hour, cooled, and quenched with aqueoussaturated ammonium chloride solution. The organic layer was dried andconcentrated in vacuo. The residue was purified by flash chromatographyon silica gel to give 2,6-dichloro-3-isopropoxybenzyl alcohol as acolorless oil (1.66 g).

NMR (CDCl₃, δ): 1.38 (6H, d, J=5Hz), 2.15 (1H, t, J=7.5Hz), 4.52 (1H,m), 4.97 (2H, d, J=7.5Hz), 6.87 (1H, d, J=10Hz), 7.25 (1H, d, J=10Hz)

Preparation 13

The following compounds were obtained according to a similar manner tothat of Preparation 12.

(1) 2,6-Dichloro-3-methoxybenzyl alcohol

mp: 99°-101° C. p NMR (CDCl₃, δ): 2.12 (1H, br s), 3.90 (3H, s), 4.98(2H, s), 6.86 (1H, d, J=9Hz), 7.30 (1H, d, J=9Hz)

(2) 2,4,6-Trichloro-3-nitrobenzyl alcohol

mp: 121°-124° C. p NMR (CDCl₃, δ): 2.08 (1H, t, J=6Hz), 4.98 (2H, d,J=6Hz), 7.57 (1H, s)

(3) 2,6-Dichloro-3-nitrobenzyl alcohol

mp: 99°-100° C. p NMR (CDCl₃, δ): 5.03 (2H, s), 7.50 (1H, d, J=8Hz),7.72 (1H, d, J=8Hz)

Preparation 14

To a mixture of 2,6-dichloro-3-isopropoxybenzyl alcohol (1.65 g) andtriethylamine (808 mg) in dichloromethane was added methanesulfonylchloride (884 mg) in a few minutes at 5° C. After stirring for half anhour at 5° C., the mixture was washed with diluted hydrochloric acid andthen with aqueous sodium bicarbonate solution, dried, and concentratedin vacuo. The residue was crystallized from n-hexane to give2,6-dichloro-3-isopropoxybenzyl methanesulfonate (2.07 g).

mp: 78°-81° C. p NMR (CDCl₃, δ): 1.49 (6H, d, J=5Hz), 3.10 (3H, s), 4.56(1H, m), 5.54 (2H, s), 6.98 (1H, d, J=10Hz), 7.31 (1H, d, J=10Hz)

Preparation 15

The following compounds were obtained according to a similar manner tothat of Preparation 14.

(1) 2,6-Dichloro-3-methoxybenzyl methanesulfonate

NMR (CDCl₃, δ): 3.10 (3H, s), 3.91 (3H, s), 5.53 (2H, s), 6.98 (1H, d,J=9Hz), 7.46 (1H, d, J=9Hz)

(2) 2,4,6-Trichloro-3-nitrobenzyl methanesulfonate

mp: 113°-114° C. p NMR (CDCl₃, δ): 3.12 (3H, s), 5.50 (2H, s), 7.63 (1H,s)

(3) 2,6-Dichloro-3-nitrobenzyl methanesulfonate

mp: 78°-80° C. p NMR (CDCl₃, δ): 3.13 (3H, s), 5.60 (2H, s), 7.57 (1H,d, J=8Hz), 7.85 (1H, d, J=8Hz)

Preparation 16

A mixture of 8-hydroxy-2-methylimidazo 1,2-a!pyridine (207 mg),2,6-dichloro-3-nitrobenzyl bromide (400 mg) and potassium carbonate (580mg) in N,N-dimethylformamide (8 ml) was stirred for 2 hours at 60° C.The mixture was cooled and diluted with water. The separated oil wasextracted with dichloromethane. The organic layer was washed with water,dried, and concentrated in vacuo. The residue was purified by flashchromatography on silica gel to give8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine (120mg) as crystals.

mp: 183°-185° C. p NMR (CDCl₃, δ): 2.43 (3H, s), 5.50 (2H, s), 6.59 (1H,d, J=7.5Hz), 6.66 (1H, t, J=7.5Hz), 7.32 (1H, s), 7.52 (1H, d, J=9Hz),7.75 (1H, d, J=7.5Hz), 7.79 (1H, d, J=9Hz)

Preparation 17

A mixture of 8-hydroxy-2-methylimidazo 1,2-a!pyridine (296 mg),1,3-dichloro-2-(2-mesyloxyethyl)benzene (645 mg) and potassium carbonate(828 mg) in N,N-dimethylformamide (12 ml) was stirred for 6 hours at 70°C. The mixture was treated according to a similar manner to that ofPreparation 16 to give 8-2-(2,6-dichlorophenyl)ethyloxy!-2-methylimidazo 1,2-a!pyridine (150 mg).

mp: 92°-94° C. p NMR (CDCl₃, δ): 2.48 (3H, s), 3.69 (2H, m), 4.29 (2H,m), 6.49 (1H, d, J=7.5Hz), 6.61 (1H, t, J=7.5Hz), 7.15 (1H, dd, J=7Hzand 5Hz), 7.29-7.35 (3H, m), 7.69 (1H, d, J=7.5Hz)

Preparation 18

The following compounds were obtained according to similar manners tothose of Preparation 16 or 17.

(1) 2-Amino-3-(2,6-dichlorobenzyloxy)-6-methylpyridine

mp: 140°-141° C. p NMR (CDCl₃, δ): 2.35 (3H, s), 4.61 (2H, br s), 5.28(2H, s), 6.49 (1H, d, J=8Hz), 7.08 (1H, d, J=8Hz), 7.20-7.41 (3H)

(2) 8- 1-(2,6-Dichlorophenyl)ethoxy!-2-methylimidazo 1,2-a!pyridine

mp: 173°-174° C. p NMR (CDCl₃, δ): 1.93 (3H, d, J=7Hz), 2.48 (3H, s),6.06-6.22 (2H), 6.42 (1H, t, J=7Hz), 7.06-7.32 (4H), 7.59 (1H, d, J=7Hz)

(3) 8- 2,6-Dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 159°-161° C. p NMR (CDCl₃, δ): 1.86 (3H, s), 2.44 (3H, s), 3.20 (3H,s), 5.50 (2H, s), 6.55-6.75 (2H), 7.29 (1H, d, J=9Hz), 7.33 (1H, s),7.46 (1H, d, J=9Hz), 7.74 (1H, d, J=7Hz)

(4) 8-2,6-Dichloro-3-(N-methyl-N-trifluoroacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.31 (3H, s), 5.48 (2H, s), 6.57-6.70 (2H,m), 7.30 (1H, d, J=10Hz), 7.33 (1H, s), 7.46 (1H, d, J=10Hz), 7.74 (1H,dd, J=7.5Hz and 2Hz)

(5) 8-2,6-Dichloro-3-(N-methyl-N-tert-butoxycarbonylamino)benzyloxy!-2-methylimidazol,1,2-a!pyridine

(6) 8- 2,6-Dichloro-3-(N-methyl-N-mesylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.04 (3H, s), 3.29 (3H, s), 5.45 (2H, s),6.58-6.72 (2H, m), 7.32 (1H, s), 7.42 (1H, d, J=10Hz), 7.49 (1H, d,J=10Hz), 7.74 (1H, dd, J=7.5Hz and 1.5Hz)

(7) 8- 2,6-Dichloro-3-(2-pyrrolidinon-1-yl)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 190°-191° C. p NMR (CDCl₃, δ): 2.13-2.35 (2H, m), 2.42 (3H, s), 2.59(2H, t, J=9Hz), 3.76 (2H, t, J=9Hz), 5.43 (2H, s), 6.54-6.75 (2H, m),7.21-7.48 (3H, m), 7.73 (1H, d, J=6Hz)

(8) 8-(2,6-Dichloro-3-methoxybenzyloxy)-2-methylimidazo- 1,2-a!pyridine

mp: 179°-180° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.91 (3H, s), 5.46 (2H, s), 6.55-6.72(2H), 6.92 (1H, d, J=9Hz), 7.24-7.36 (2H), 7.71 (1H, d, J=7Hz)

(9) 8-(2,6-Dichloro-3-isopropoxybenzyloxy)-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.40 (6H, d, J=5Hz), 2.45 (3H, s), 4.57 (1H, m), 5.45(2H, s), 6.59-6.70 (2H, m), 6.92 (1H, d, J=10Hz), 7.25-7.31 (2H, m),7.72 (1H, dd, J=7.5Hz and 1.5Hz)

(10) 8-(2,4,6-Trichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 184°-186° C.

NMR (CDCl₃, δ) 2.44 (3H, s), 5.47 (2H, s), 6.57 (1H, d, J=8Hz), 6.67(1H, t, J=8Hz), 7.33 (1H, s), 7.58 (1H, s), 7.76 (1H, d, J=8Hz)

(11) 8- 2-Chloro-5-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.49 (3H, s), 3.21 (3H, s), 5.43 (2H, s), 6.40 (1H, d,J=7.5Hz), 6.58 (1H, t, J=7.5Hz), 7.10 (1H, dd, J=10Hz and 1.5Hz), 7.37(1H, s), 7.46 (1H, d, J=10Hz), 7.49 (1H, d, J=1.5Hz), 7.74 (1H, d,J=7.5Hz)

(12) 8-3-(N-Acetoxyacetyl-N-methylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 118°-119° C.

NMR (CDCl₃, δ): 2.14 (3H, s), 2.42 (3H, s), 3.21 (3H, s), 4.19, 4.48(each 1H, d, J=15Hz), 5.49 (1H, s), 6.54-6.72 (2H), 7.32 (1H, s),7.40-7.49 (each 1H, d, J=9Hz), 7.74 (1H, d, J=7Hz)

(13) 8-2,6-Dichloro-3-(N-methyl-N-phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 221°-223° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.22 (3H, s), 4.11 (2H, s), 5.52 (2H, s),6.59-6.73 (2H), 7.32 (1H, s), 7.52 (2H, s), 7.67-7.92 (4H)

(14) 2-Methyl-8-(2-trifluoromethylbenzyloxy)imidazo 1,2-a!pyridine

mp: 131°-132° C.

NMR (CDCl₃, δ) 2.48 (3H, s), 5.38 (2H, s), 6.35 (1H, d, J=7Hz), 6.55(1H, t, J=7Hz), 7.32 (1H, s), 7.61 (5H, s), 7.69 (1H, d, J=7Hz)

(15) 8-(2-Methoxycarbonylbenzyloxy)-2-methylimidazo- 1,2-a!pyridine

mp: 88°-89° C.

NMR (CDCl₃, δ): 2.49 (3H, s), 3.92 (3H, s), 5.77 (2H, s), 6.38 (1H, d,J=7.5Hz), 6.55 (1H, d, J=7.5Hz), 7.33 (1H, s), 7.37 (1H, t, J=7.5Hz),7.53 (1H, t, J=7.5Hz), 7.67 (1H, d, J=7.5Hz), 7.88 (1H, d, J=7.5Hz),8.05 (1H, d, J=7.5Hz)

(16) 8-(2-Phenylbenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 90°-92° C.

NMR (CDCl₃, δ): 2.48 (3H, s), 5.19 (2H, s), 6.14 (1H, d, J=7.5Hz), 6.48(1H, t, J=7.5Hz), 7.31-7.45 (9H, m), 7.63 (1H, d, J=7.5Hz), 7.75 (1H, m)

(17) 8-(2,6-Difluorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 114°-116° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 5.31 (2H, s), 6.56-6.67 (2H, m), 6.86-6.99(2H, m), 7.25-7.41 (1H, m), 7.32 (1H, s), 7.70 (1H, d, J=7.5Hz)

(18) 8-(2,6-Dibromobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 159°-162° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 5.49 (2H, s), 6.59 (1H, d, J=7Hz), 6.67(1H, t, J=7Hz), 7.08 (1H, t, J=8Hz), 7.30 (1H, s), 7.58 (2H, d, J=8Hz),7.71 (1H, d, J=7Hz)

(19) 8-(2-Chloro-6-fluorobenzyloxy)-2-methylimidazo- 1,2-a!pyridine

mp: 150°-151° C.

NMR (CDCl₃, δ) 2.44 (3H, s), 5.38 (2H, s), 6.59 (1H, d, J=7Hz), 6.63(1H, t, J=7Hz), 7.02 (1H, t, J=8Hz), 7.20-7.38 (3H), 7.70 (1H, d, J=7Hz)

(20) 8-(4-Bromo-2-fluorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 150°-151° C.

NMR (CDCl₃, δ): 2.48 (3H, s), 5.31 (2H, s), 6.42 (1H, d, J=7.5Hz), 6.58(1H, t, J=7.5Hz), 7.23-7.33 (3H, m), 7.49 (1H, t, J=7.5Hz), 7.69 (1H, d,J=7.5Hz)

(21) 8-(2-Chloro-5-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 134°-135° C.

NMR (CDCl₃, δ) 2.49 (3H, s), 5.48 (2H, s), 6.41 (1H, d, J=7Hz), 6.60(1H, t, J=7Hz), 7.36 (1H, s), 7.60 (1H, d, J=9Hz), 7.74 (1H, d, J=7Hz),8.16 (1H, dd, J=9Hz and 2Hz), 8.55 (1H, d, J=2Hz)

(22) 8- 2-Chloro-6-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.90 (3H, s), 2.41 (3H, s), 3.23 (3H, s), 5.19 (1H, d,J=10Hz), 5.26 (1H, d, J=10Hz), 6.55 (1H, d, J=7.5Hz), 6.67 (1H, t,J=7.5Hz), 7.18 (1H, dd, J=7.5Hz and 2Hz), 7.33 (1H, s), 7.48-7.54 (2H,m), 7.74 (1H, dd, J=7.5Hz and 2Hz)

(23) 8-(2-Chloro-6-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 162°-163° C.

NMR (CDCl₃, δ): 2.41 (3H, s), 5.62 (2H, s), 6.51-6.69 (2H), 7.30 (1H,s), 7.48 (1H, t, J=8Hz), 7.63-7.75 (2H), 7.85 (1H, d, J=7Hz).

(24) 8-3-(N,N-Di-tert-butoxycarbonylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 180°-181° C.

NMR (CDCl₃, δ) 1.41 (18H, s), 2.42 (3H, s), 5.53 (2H, s), 6.51-6.68(2H), 7.20 (1H, d, J=9Hz), 7.30 (1H, s), 7.38 (1H, d, J=9Hz), 7.70 (1H,d, J=7Hz)

(25) 2-Methyl-8-(2,4,6-trichlorobenzyloxy)imidazo 1,2-a!-pyridine

mp: 187°-189° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 5.40 (2H, s), 6.58 (1H, d, J=7Hz), 6.67(1H, t, J=7Hz), 7.31 (1H, s), 7.49 (2H, s), 7.71 (1H, d, J=7Hz)

(26) 8-(2,3,6-Trichlorobenzyloxy)-2-methylimidazo 1,2-a!-pyridine

mp: 148°-149° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 5.48 (2H, s), 6.52-6.71 (2H), 7.30 (1H, d,J=9Hz), 7.31 (1H, s), 7.45 (1H, d, J=9Hz), 7.72 (1H, d, J=7Hz)

(27) 8-(2,6-Dibromo-4-methoxycarbonylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 153°-154° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.97 (3H, s), 5.51 (2H, s), 6.58 (1H, d,J=7Hz), 6.68 (1H, t, J=7Hz), 7.31 (1H, s), 7.74 (1H, d, J=7Hz), 8.21(2H, s)

(28) 8-(4-Benzoyl-2-chlorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

NMR (CDCl₃, δ) 2.49 (3H, s), 5.49 (2H, s), 6.40 (1H, d, J=8Hz), 6.60(1H, d, J=8Hz), 7.35 (1H, s), 7.44-7.88 (9H)

(29) 8-(2,6-Dichloro-4-benzoylbenzyloxy)-2-methylimidazo 1,2-a!pyridine

NMR (CDCl₃, δ) 2.45 (3H, s), 5.50 (2H, s), 6.57-6.72 (2H), 7.28-7.92(9H)

(30) 8- 4-(2-Cyanophenyl)benzyloxy!-2-methylimidazo 1,2-a!pyridine

NMR (CDCl₃, δ): 2.49 (3H, s), 5.38 (2H, s), 6.44 (1H, d, J=8Hz), 6.58(1H, t, J=8Hz), 7.32 (1H, s), 7.38-7.82 (9H)

(31) 8-(6-Chloropiperonyl)methoxy-2-methylimidazo 1,2-a!pyridine

mp: 141°-142° C.

NMR (CDCl₃, δ) 2.49 (3H, s), 5.31 (2H, s), 5.96 (2H, s), 6.38 (1H, d,J=7Hz), 6.58 (1H, t, J=7Hz), 6.86 (1H, s), 7.11 (1H, s), 7.31 (1H, s),7.68 (1H, d, J=7Hz)

(32) 8-(2-Bromothiophen-4-yl)methoxy-2-methylimidazo 1,2-a!pyridine

mp: 127°-128° C.

NMR (CDCl₃, δ): 2.46 (3H, s), 5.42 (2H, s), 6.48 (1H, d, J=7Hz), 6.59(1H, t, J=7Hz), 7.09 (1H, s), 7.16-7.35 (2H), 7.69 (1H, d, J=7Hz)

(33) 8-(3-Chlorobenzofuran-2-yl)methoxy-2-methylimidazo 1,2-a!pyridine

mp: 141°-143° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 5.44 (2H, s), 6.56-6.66 (2H, m), 7.29-7.71(6H, m)

(34) 8-3-(4-Chlorophenyl)-5-methylbenzofuran-2-yl!-methoxy-2-methylimidazo1,2-a!pyridine

mp: 140°-141° C.

NMR (CDCl₃, δ) 2.45 (6H, s), 5.33 (2H, s), 6.49 (1H, d, J=7Hz), 6.58(1H, t, J=7Hz), 7.12-7.56 (8H), 7.70 (1H, d, J=7Hz)

(35)8-(4,6-Dichloro-3-methyl-2-benzothiazolinon-5-yl)-methoxy-2-methylimidazo1,2-a!pyridine

mp: 236°-237° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.87 (3H, s), 5.50 (2H, s), 6.56-6.72 (2H,m), 7.32 (1H, s), 7.42 (1H, s), 7.72 (1H, d, J=7Hz)

(36)8-(4,6-Dichloro-3-ethyl-2-benzothiazolinon-5-yl)-methoxy-2-methylimidazo1,2-a!pyridine

mp: 202°-205° C.

NMR (CDCl₃, δ): 1.41 (3H, t, J=7.5Hz), 2.45 (3H, s), 4.49 (2H, q,J=7.5Hz), 5.53 (2H, s), 6.59-6.72 (2H, m), 7.31 (1H, s), 7.44 (1H, s),7.74 (1H, dd, J=7.5Hz and 1.5Hz)

(37)8-(5,7-Dichloro-4-methyl-1,4-benzothiazin-3(4H)-on-6-yl)methoxy-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.40 (2H, s), 3.43 (3H, s), 5.45 (2H, s),6.58 (1H, d, J=8Hz), 6.67 (1H, t, J=8Hz), 7.32 (1H, s), 7.47 (1H, s),7.73 (1H, d, J=8Hz)

Preparation 19

A mixture of 2-amino-3-(2,6-dichlorobenzyloxy)-pyridine (1.345 g) and3-bromo-1,1,1-trifluoroacetone (1.147 g) in ethanol (26 ml) was refluxedfor 5 hours, cooled, and concentrated in vacuo. The residue waspartitioned between ethyl acetate and aqueous sodium bicarbonatesolution. The organic layer was washed with water, dried, andconcentrated under reduced pressure to give a solid, which was purifiedby flash chromatography on silica gel to give8-(2,6-dichlorobenzyloxy)-2-trifluoromethylimidazo 1,2-a!pyridine as awhite solid (803 mg).

mp: 184°-185° C.

NMR (CDCl₃, δ): 5.50 (2H, s), 6.75 (1H, d, J=7.5Hz), 6.85 (1H, t,J=7.5Hz), 7.23-7.38 (3H, m), 7.83 (1H, d, J=7.5Hz), 7.88 (1H, s)

Preparation 20

The following compounds were obtained according to a similar manner tothat of Preparation 19.

(1) 8-(2,6-Dichlorobenzyloxy)-2-ethylimidazo 1,2-a!pyridine

mp: 153°-154° C.

NMR (CDCl₃, δ) 1.30 (3H, t, J=7Hz), 2.84 (2H, q, J=7Hz), 5.46 (2H, s),6.55-6.71 (2H), 7.19-7.42 (4H), 7.73 (1H, d, J=7Hz)

(2) Ethyl 8-(2,6-dichlorobenzyloxy)imidazo 1,2-a!pyridine-2-carboxylate

mp: 176°-178° C.

NMR (CDCl₃, δ): 1.40 (3H, t, J=7Hz), 4.42 (2H, q, J=7Hz), 5.49 (2H, s),6.69 (1H, d, J=7Hz), 6.81 (1H, t, J=7Hz), 7.21-7.43 (3H), 7.81 (1H, d,J=7Hz), 8.18 (1H, s)

(3) 8-(2,6-Dichlorobenzyloxy)-2,5-dimethylimidazo 1,2-a!pyridine

mp: 140°-141° C.

NMR (CDCl₃, δ) 2.47 (6H, s), 5.44 (2H, s), 6.45 (1H, d, J=7Hz), 6.60(1H, d, J=7Hz), 7.15-7.40 (4H)

(4) 8-Amino-2,7-dimethylimidazo 1,2-a!pyridine dihydrochloride

mp: >250° C.

NMR (DMSO-d₆, δ): 2.25 (3H, s), 2.46 (3H, s), 6.82 (2H, br s), 7.10 (1H,d, J=7Hz), 7.90 (1H, s), 8.03 (1H, d, J=7Hz)

Preparation 21

8-(2,6-Dichlorophenyl)methylamino-2,7-dimethylimidazo 1,2-a!pyridine(100 mg) was obtained by reacting 8-amino-2,7-dimethylimidazo1,2-a!pyridine (100 mg) with 2,6-dichlorobenzaldehyde (191 mg) accordingto a similar manner to that of Example 10 mentioned below.

mp: 87°-88° C.

NMR (CDCl₃, δ) 2.26 (3H, s), 2.40 (3H, s), 4.46 (1H, br s), 4.99 (2H, d,J=5Hz), 6.41 (1H, d, J=7Hz), 7.07-7.40 (4H), 7.53 (1H, d, J=7Hz)

Preparation 22

8-(2,6-Dichlorophenyl)methylamino-2-methylimidazo 1,2-a!pyridine wasobtained according to a similar manner to that of Preparation 21.

mp: 119°-121° C.

NMR (CDCl₃, δ): 2.38 (3H, s), 4.69 (2H, d, J=4Hz), 5.19 (1H, t, J=4Hz),6.29 (1H, d, J=7.5Hz), 6.63 (1H, t, J=7.5Hz), 7.15-7.36 (3H, m), 7.32(1H, s), 7.47 (1H, d, J=7.5Hz)

Preparation 23

To a suspension of sodium hydride (60% oil dispersion, 17 mg) was added8-acetylamino-2-methylimidazo 1,2-a!pyridine (73 mg), and the mixturewas stirred for 30 minutes, 2,6-dichlorobenzyl bromide (97 mg) was addedthereto, and the mixture was stirred for 1 hour. Water was addedthereto, and the mixture was extracted with methylene chloride threetimes. The combined organic layer was washed with water four times andbrine, dried over magnesium sulfate, and concentrated in vacuo. Theresidue was crystallized with diethyl ether to give 8-N-(2,6-dichlorophenyl)methyl-N-acetylamino!-2-methylimidazo1,2-a!pyridine (85 mg).

mp: 177°-178° C.

NMR (CDCl₃, δ) 1.95 (3H, s), 2.48 (3H, s), 4.92 (1H, br d, J=15Hz), 6.00(1H, br d, J=15Hz), 6.36 (1H, d, J=7Hz), 6.45 (1H, t, J=7Hz), 7.00-7.21(3H), 7.38 (1H, s), 7.98 (1H, d, J=7Hz)

Preparation 24

To a solution of 8-2,6-dichloro-3-(2-pyrrolidon-1-yl)benzyloxy!-2-methylimidazo1,2-a!pyridine (120 mg) in tetrahydrofuran (3 ml) was added lithiumaluminum hydride (19 mg) under ice-cooling, and the mixture was stirredfor 2 hours. A saturated aqueous ammonium chloride solution was addedthereto, and insoluble material was filtered off. The filtrate wasconcentrated, and the residue was purified by preparative thin-layerchromatography (5% solution of methanol in methylene chloride) to give8- 2,6-dichloro-3-(1-pyrrolidinyl)benzyloxy!-2-methylimidazo1,2-a!pyridine (23 mg).

NMR (CDCl₃, δ): 1.86-2.01 (4H, m), 2.41 (3H, s), 3.26-3.40 (4H, m), 5.44(2H, s), 6.57-6.72 (2H, m), 6.90, 7.19 (each 1H, d, J=9Hz), 7.31 (1H,s), 7.72 (1H, d, J=7Hz)

Preparation 25

8-(3-Amino-2,6-dichlorobenzyloxy)-2-methylimidazo 1,2-a!pyridine wasobtained according to a similar manner to that of Example 4 mentionedbelow.

NMR (DMSO-d₆, δ): 2.27 (3H, s), 5.30 (2H, s), 5.70 (2H, s), 6.64-7.00(3H), 7.24 (1H, d, J=8Hz), 7.65 (1H, s), 8.09 (1H, d, J=7Hz)

Preparation 26

8-(2,6-Dichloro-3-methylaminobenzyloxy)-2-methylimidazo 1,2-a!pyridinewas obtained according to a similar manner to that of Example 7mentioned below.

mp: 167°-168° C.

NMR (CDCl₃, δ): 2.40 (3H, s), 2.91 (3H, d, J=5Hz), 4.41 (1H, br d,J=5Hz), 5.48 (2H, s), 6.56-6.78 (3H), 7.18 (1H, d, J=9Hz), 7.33 (1H, brs), 7.80 (1H, br d, J=6Hz)

Preparation 27

8- 2,6-Dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 14 mentioned below.

mp: 159°-161° C.

NMR (CDCl₃, δ): 1.86 (3H, s), 2.44 (3H, s), 3.20 (3H, s), 5.50 (2H, s),6.55-6.75 (2H), 7.29 (1H, d, J=9Hz), 7.33 (1H, s), 7.46 (1H, d, J=9Hz),7.74 (1H, d, J=7Hz)

Preparation 28

8-2,6-Dichloro-3-(N-methoxycarbonyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 18 mentioned below.

NMR (CDCl₃, δ): 2.40 (3H, s), 3.21 (3H, s), 3.68 (3H, s), 5.45 (2H, s),6.59-6.82 (2H), 7.21-7.49 (3H), 7.81 (1H, d, J=6Hz)

Preparation 29

Pivaloyl chloride (0.22 ml) was added dropwise to a mixture ofacetylsarcosine (264 mg), N-methylmorpholine (0.22 ml) andN-methylpyrrolidone (30 ml) under a dry ice-tetrachloromethane bathcooling. This mixture was stirred for 10 minutes under ice-cooling, and8- 3-amino-2,6-dichlorobenzyloxy!-2-methylimidazo 1,2-a!pyridine (500mg) was added thereto under a dry ice-tetrachloromethane bath cooling.The mixture was stirred for 22 hours at ambient temperature. The mixturewas partitioned between ethyl acetate and a saturated aqueous sodiumbicarbonate solution, and the aqueous layer was extracted with ethylacetate twice. The combined organic layer was dried over magnesiumsulfate and concentrated in vacuo, and the residue was purified by flashcolumn chromatography (methylene chloride:methanol=50:1, V/V) to give 8-3-(acetylsarcosylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (260 mg).

NMR (CDCl₃, δ): 2.18 (3H, s), 2.42 (3H, s), 3.09 (0.3H, s), 3.19 (2.7H,s), 4.19 (2H, s), 5.45 (2H, s), 6.55-6.72 (2H), 7.30 (1H, s), 7.34 (1H,d, J=9Hz), 7.72 (1H, d, J=8Hz), 8.38 (1H, d, J=9Hz), 8.81 (1H, br s)

Preparation 30

8- 2,6-Dichloro-3-(N-ethyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 26 mentioned below.

NMR (DMSO-d₆, δ) 1.10 (3H, t, J=7Hz), 2.43 (3H, s), 2.75 (3H, s), 3.05(2H, q, J=7Hz), 5.59 (2H, s), 7.28-7.62 (3H), 7.71 (1H, d, J=7Hz), 8.16(1H, br s), 8.55 (1H, d, J=7Hz)

Preparation 31

(1) 3,5'-Dichlorobenzanilide was obtained according to a similar mannerto that of Example 15 from 3,5-dichloroaniline and benzoyl chloride.

mp: 148°-149° C.

NMR (CDCl₃, δ): 7.15 (1H, t, J=0.5Hz), 7.44-7.60 (3H, m), 7.51 (2H, d,J=0.5Hz), 7.76-7.97 (3H, m)

(2) 3',5'-Dichloro-N-methylbenzanilide was obtained according to asimilar manner to that of Example 23.

NMR (CDCl₃, δ): 3.46 (3H, s), 6.94 (2H, d, J=0.5Hz), 7.13 (1H, t,J=0.5Hz), 7.20-7.41 (5H, m)

(3) To a stirred solution of 3',5'-dichloro-N-methylbenzanilide (2.317g) in tetrahydrofuran was added lithium aluminum hydride (380 mg) in anice-bath and the resulting suspension was stirred at the sametemperature for one hour. The reaction mixture was quenched withsaturated ammonium chloride and filtered through celite pad. Theinorganic material on the celite was washed with ethyl acetate.

Methanol was added to the filtrate and stirred at ambient temperaturefor half an hour. The organic layer was washed with water, dried overanhydrous magnesium sulfate and concentrated in vacuo. The residue waspurified by flash chromatography eluting with ethyl acetate-n-hexane(1:9, V/V) to afford 3,5-dichloro-N-methylaniline (1.38 g) as acolorless oil.

NMR (CDCl₃, δ): 2.81 (3H, s), 3.87 (1H, br s), 6.94 (2H, d, J=0.5Hz),6.66 (1H, t, J=0.5Hz)

(4) The mixture of 3,5-dichloro-N-methylaniline (345 mg) and excessamount of benzyl bromide and triethylamine in acetonitrile (7 ml) wasrefluxed for 4 hours. The reaction mixture was separated with ethylacetate and water, and the organic layer was washed with water, driedand concentrated in vacuo to give N-benzyl-3,5-dichloro-N-methylaniline(532 mg).

NMR (CDCl₃, δ): 3.01 (3H, s), 4.50 (2H, s), 6.57 (2H, d, J=0.5Hz), 6.67(2H, t, J=0.5Hz), 7.10-7.46 (5H, m)

(5) Phosphoryl chloride (12.7 ml) was dropwise added toN,N-dimethylformamide (70 ml), and the mixture was stirred for 30minutes at ambient temperature. A solution ofN-benzyl-3,5-dichloro-N-methylaniline (7.26 g) in N,N-dimethylformamide(30 ml) was dropwise added thereto, and the mixture was stirred for 30minutes at ambient temperature and then for 30 minutes at 50° C. Thereaction mixture was neutralized with 1N aqueous sodium hydroxidesolution and extracted with ethyl acetate. The organic solution waswashed with water and brine, dried over magnesium sulfate andconcentrated in vacuo. The residue was purified by a flashchromatography (ethyl acetate: n-hexane=1:6, V/V) to giveN-benzyl-3,5-dichloro-4-formyl-N-methylaniline (5.70 g).

mp: 66°-70° C.

NMR (CDCl₃₁ δ): 3.10 (3H, S), 4.60 (2H, s), 6.65 (2H, s), 6.98-7.42 (5H,m), 10.30 (1H, s)

(6) To a solution of N-benzyl-3,5-dichloro-4-formyl-N-methylaniline (820mg) in ethyl acetate (10 ml) was added palladium hydroxide (80 mg) undernitrogen atmosphere. This mixture was stirred under hydrogen atmosphereunder atmospheric pressure at ambient temperature for one and half anhour. The precipitate was dissolved into chloroform and filtered throughcelite and the filtrate was concentrated in vacuo. The residual solidwas suspended in diisopropyl ether and warmed at 90° C. After beingstirred and cooled, the solid was collected by filtration to afford3,5-dichloro-4-formyl-N-methylaniline (470 mg) as a pale brown solid.

mp: 172°-174° C.

NMR (CDCl₃, δ): 2.90 (3H, t, J=5Hz), 4.50 (1H, br s), 6.50 (2H, s),10.32 (1H, s)

(7) To a solution of 3,5-dichloro-4-formyl-N-methylaniline (242 mg) inmethanol (3 ml) and tetrahydrofuran (3 ml) was added sodium borohydride(45 mg) and the mixture was stirred for 30 minutes at ambienttemperature. The reaction mixture was quenched with aqueous saturatedammonium chloride solution and ethyl acetate was added thereto. Theseparated organic layer was washed with aqueous saturated ammoniumchloride solution, dried and concentrated in vacuo to give3,5-dichloro-4-hydroxymethyl-N-methylaniline (246 mg).

mp: 108°-111° C.

NMR (CDCl₃, δ): 1.85 (1H, t, J=6Hz), 2.81 (3H, d, J=5Hz), 3.91 (1H, brs), 4.84 (2H, d, J=6Hz), 6.51 (2H, s)

(8) 3,5-Dichloro-4-hydroxymethyl-N-methylacetanilide was obtainedaccording to a similar manner to that of Example 14.

NMR (CDCl₃, δ) 1.97 (3H, br s), 2.18 (1H, t, J=7Hz), 3.26 (3H, s), 4.96(2H, d, J=7Hz), 7.23 (2H, s)

(9) 8- 2,6-Dichloro-4-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofPreparation 14 and then Preparation 17.

NMR (CDCl₃, δ) 2.04 (3H, br s), 2.44 (3H, s), 3.27 (3H, s), 5.42 (2H,s), 6.60 (1H, dd, J=7Hz and 0.5Hz), 6.68 (1H, t, J=7Hz), 7.24 (2H, s),7.33 (1H, s), 7.73 (1H, dd, J=7Hz and 0.5Hz)

Preparation 32

8- 3-(N-Glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 34.

mp: 144°-147° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.00 (1H, d, J=17Hz), 3.12 (1H, d,J=17Hz), 3.22 (3H, s), 5.49 (2H, s), 6.56-6.72 (2H), 7.25 (1H, d,J=9Hz), 7.31 (1H, s), 7.45 (1H, d, J=9Hz), 7.72 (1H, d, J=7Hz)

Preparation 33

8- 2,6-Dichloro-3- N-N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 69 mentioned below.

NMR (CDCl₃, δ): 2.31 (6H, s), 2.42 (3H, s), 2.94 (2H, s), 3.25 (3H, s),3.56 (1H, dd, J=18Hz and 5Hz), 3.86 (1H, dd, J=18Hz and 5Hz), 5.48 (2H,s), 6.59-6.72 (2H), 7.31 (1H, s), 7.33 (1H, d, J=9Hz), 7.49 (1H, d,J=9Hz), 7.72 (1H, d, J=7Hz), 7.89 (1H, br s)

Example 1

To a solution of 8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridine (85 mg) in a mixture of ethanol (1 ml) and 1,4-dioxane (1ml) was added in one portion N-bromosuccinimide (43 mg) at ambienttemperature. After stirring for one hour at the same temperature, themixture was filtered to give3-bromo-8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine(85 mg) as a yellow solid.

mp: 217°-219° C.

NMR (DMSO-d₆, δ): 2.31 (3H, s), 5.50 (2H, s) 7.0-7.04 (2H, m), 7.89-7.98(2H, m), 8.23 (1H, d, J=9Hz)

Example 2

To a solution of 8-(2,6-dichlorobenzyloxy)-2-methylimidazo1,2-a!pyridine (100 mg) in ethanol (2 ml) was added in one portionN-chlorosuccinimide (65.3 mg) at ambient temperature. After stirring for1 hour at the same temperature, water was added thereto, and the mixturewas extracted with methylene chloride. The organic layer was washed withbrine, dried and concentrated in vacuo. The residue was subjected to acolumn chromatography on silica gel eluting with 1% solution of methanolin methylene chloride. The desired residue was recrystallized with amixture of benzene and n-hexane to give3-chloro-8-(2,6-dichlorobenzyloxy)-2-methylimidazo 1,2-a!pyridine (63mg).

mp: 185°-186° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 5.48 (2H, s), 6.69 (1H, d, J=7Hz), 6.81(1H, t, J=7Hz), 7.19-7.40 (3H, m), 7.69 (1H, d, J=7Hz)

Example 3

The following compounds were obtained according to similar manners tothose of Examples 1 or 2.

(1) 3-Bromo-8-(2,6-dichlorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 173°-174° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 5.48 (2H, s), 6.70 (1H, d, J=7Hz), 6.82(1H, t, J=7Hz), 7.19-7.41 (3H, m), 7.75 (1H, d, J=7Hz)

(2) 3-Chloro-8-(2,6-dichlorobenzyloxy)-2-trifluoromethylimidazo1,2-a!pyridine

mp: 213°-5° C.

NMR (CDCl₃ --CD₃ OD, δ): 5.53 (2H, s), 6.98 (1H, d, J=7.5Hz), 7.12 (1H,t, J=7.5Hz), 7.31-7.46 (3H, m), 7.93 (1H, d, J=7.5Hz)

(3) 3-Chloro-8-(2,6-dichlorobenzyloxy)-2-ethylimidazo 1,2-a!pyridine

mp: 169°-170° C.

NMR (CDCl₃, δ): 1.30 (3H, t, J=7Hz), 2.81 (2H, q, J=7Hz), 5.49 (2H, s),6.69 (1H, d, J=7Hz), 6.72 (1H, t, J=7Hz), 7.19-7.41 (3H, m), 7.71 (1H,d, J=7Hz)

(4) Ethyl 3-chloro-8-(2,6-dichlorobenzyloxy)imidazo1,2-a!pyridine-2-carboxylate

mp: 207°-208° C.

NMR (CDCl₃, δ): 1.41 (3H, t, J=7Hz), 4.47 (2H, q, J=7Hz), 5.50 (2H, s),6.77 (1H, d, J=7Hz), 6.96 (1H, t, J=7Hz), 7.21-7.44 (3H, m), 7.82 (1H,d, J=7Hz)

(5) 3-Chloro-8-(2,6-dichlorobenzyloxy)-2,5-dimethylimidazo1,2-a!pyridine

mp: 181°-182° C.

NMR (CDCl₃, δ) 2.40 (3H, s), 2.89 (3H, s), 5.40 (2H, s), 6.47 (1H, d,J=7Hz), 6.53 (1H, d, J=7Hz), 7.19-7.39 (3H, m)

(6) 3-Bromo-8- 1-(2,6-dichlorophenyl)ethoxy!-2-methylimidazo1,2-a!pyridine

mp: 135°-136° C.

NMR (CDCl₃, δ) 1.93 (3H, d, J=7Hz), 2.49 (3H, s), 6.11-6.27 (2H), 6.60(1H, t, J=7Hz), 7.13 (1H), 7.22-7.32 (2H), 7.61 (1H, d, J=7Hz)

(7) 3-Chloro-8-(2,6-dichlorobenzylamino)-2,7-dimethylimidazo1,2-a!pyridine

mp: 144°-145° C.

NMR (CDCl₃, δ) 2.38 (3H, s), 2.40 (3H, s), 4.44 (1H, br s), 5.00 (2H, d,J=5Hz), 6.59 (1H, d, J=7Hz), 7.09-7.42 (3H, m), 7.51 (1H, d, J=7Hz)

(8) 3-Bromo-8- N-(2,6-dichlorobenzyl)-N-acetylamino!-2-methylimidazo1,2-a!pyridine

mp: 141°-142° C.

NMR (CDCl₃, δ) 1.90 (3H, s), 2.49 (3H, s), 4.90 (1H, br d, J=14Hz), 5.99(1H, br d, J=14Hz), 6.45 (1H, d, J=7Hz), 6.61 (1H, t, J=7Hz), 7.01-7.21(3H, m), 7.98 (1H, d, J=7Hz)

(9) 3-Chloro-8- 2-(2,6-dichlorophenyl)ethyloxy!-2-methylimidazo1,2-a!pyridine

mp: 131°-134° C.

NMR (CDCl₃, δ): 2.48 (3H, s), 3.66 (2H, m), 4.33 (2H, m), 6.58 (1H, d,J=7.5Hz), 6.78 (1H, t, J=7.5Hz), 7.15 (1H, dd, J=7Hz and 5Hz), 7.32 (2H,d, J=7.5Hz), 7.66 (1H, d, J=7.5Hz)

(10) 3-Chloro-8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 203°-205° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 5.55 (2H, s), 6.70 (1H, d, J=7.5Hz), 6.85(1H, t, J=7.5Hz), 7.54 (1H, d, J=9Hz), 7.74 (1H, d, J=7.5Hz), 7.82 (1H,d, J=9Hz)

(11) 3-Chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 212°-213° C.

NMR (CDCl₃₁ δ): 1.87 (3H, s), 2.48 (3H, s), 3.20 (3H, s), 5.51 (2H, s),6.74 (1H, br d, J=7Hz), 6.90 (1H, br t, J=7Hz), 7.29 (1H, d, J=9Hz),7.45 (1H, d, J=9Hz), 7.76 (1H, d, J=7Hz)

(12) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N-trifluoroacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 175°-176° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 3.33 (3H, s), 5.52 (2H, s), 6.71 (1H, d,J=7.5Hz), 6.85 (1H, t, J=7.5Hz), 7.33 (1H, d, J=8Hz), 7.46 (1H, d,J=8Hz), 7.79 (1H, dd, J=7.5Hz and 1.5Hz)

(13) 3-Bromo-8-2,6-dichloro-3-(N-methoxycarbonyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 178°-179° C.

NMR (CDCl₃, δ) 2.48 (3H, s), 3.22 (3H, s), 3.65 (3H, s), 5.49 (2H, s),6.78 (1H, br d, J=7Hz), 6.90 (1H, br t, J=7Hz), 7.25 (1H, d, J=9Hz),7.39 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz)

(14) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N-tert-butoxycarbonylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 122°-123° C.

Mass (M+1): 516

(15) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N-mesylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 161°-164° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 3.07 (3H, s), 3.30 (3H, s), 5.48 (2H, m),6.71 (1H, d, J=7.5Hz), 6.85 (1H, t, J=7.5Hz), 7.52 (1H, d, J=10Hz), 7.60(1H, d, J=10Hz), 7.77 (1H, d, J=7.5Hz and 1.5Hz)

(16) 3-Bromo-8-2,6-dichloro-3-(N-ethyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

mp: 128°-130° C.

NMR (CDCl₃ +CD₃ OD, δ) 1.30 (3H, t, J=7Hz), 2.64 (3H, s), 3.39 (3H, s),3.80 (2H, q, J=7Hz), 5.69 (2H, s), 7.49 (2H, d, J=4Hz), 7.65 (1H, d,J=9Hz), 8.01-8.21 (2H)

(17) 3-Bromo-8-2,6-dichloro-3-(2-pyrrolidinon-1-yl)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 219°-220° C.

NMR (CDCl₃, δ) 2.16-2.35 (2H, m), 2.42 (3H, S), 2.58 (2H, t, J=8Hz),3.78 (2H, t, J=7Hz), 5.47 (2H, s), 6.71 (1H, d, J=7Hz), 6.85 (1H, t,J=7Hz), 7.28, 7.42 (each 1H, d, J=9Hz), 7.76 (1H, d, J=7Hz)

(18) 3-Bromo-8- 2,6-dichloro-3-(-pyrrolidinyl)benzyloxy!-2-methylimidazo 1,2-a!pyridine

mp: 113°-114° C.

NMR (CDCl₃, δ) 1.88-2.02 (4H, m), 2.42 (3H, s), 3.25-3.41 (4H, m), 5.50(2H, s), 6.71 (1H, d, J=7Hz), 6.82 (1H, t, J=7Hz), 6.90, 7.20 (each 1H,d, J=9Hz), 7.72 (1H, d, J=7Hz)

(19) 3-Bromo-8-(2,6-dichloro-3-methoxybenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 175°-176° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 3.91 (3H, s), 5.48 (2H, s), 6.70 (1H, d,J=7Hz), 6.82 (1H, t, J=7Hz), 6.97 (1H, d, J=9Hz), 7.31 (1H, d, J=9Hz),7.72 (1H, d, J=7Hz)

(20) 3-Bromo-8-(2,6-dichloro-3-isopropoxybenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 115°-117° C.

NMR (CDCl₃, δ): 1.40 (6H, d, J=5Hz), 2.44 (3H, s), 4.53 (1H, m), 5.45(2H, s), 6.70 (1H, d, J=7.5Hz), 6.81 (1H, t, J=7.5Hz), 6.93 (1H, d,J=10Hz), 7.27 (1H, d, J=10Hz), 7.73 (1H, dd, J=7.5Hz and 1.5Hz)

(21) 3-Bromo-8-(2,4,6-trichloro-3-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridin

mp: 167°-168° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 5.48 (2H, s), 6.68 (1H, d, J=8Hz), 6.83(1H, t, J=8Hz), 7.60 (1H, s), 7.78 (1H, d, J=8Hz)

(22) 3-Bromo-8-2-chloro-5-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 141°-145° C.

NMR (CDCl₃, δ) 1.78 (3H, s), 2.50 (3H, s), 3.20 (3H, s), 5.45 (2H, s),6.50 (1H, d, J=7.5Hz), 6.77 (1H, t, J=7.5Hz), 7.13 (1H, dd, J=10Hz and1.5Hz), 7.42-7.52 (2H, m), 7.75 (1H, d, J=10Hz)

(23) 3-Bromo-8-3-(N-acetoxyacetyl-N-methylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.14 (3H, s), 2.43 (3H, s), 3.21 (2H, s), 4.18, 4.49(each 1H, d, J=15Hz), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.83 (1H, t,J=7Hz), 7.39, 7.49 (each 1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(24) 3-Bromo-8-2,6-dichloro-3-(N-methyl-M-phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 229°-230° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 4.12 (2H, s), 5.53 (2H, s),6.72 (1H, d, J=7Hz), 6.87 (1H, d, J=7Hz), 7.52 (2H, s), 7.68-7.92 (5H)

(25) 8-3-(Acetylsarcosyl)amino-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.20 (3H, s), 2.42 (3H, s), 3.19 (3H, s), 4.19 (2H, s),5.48 (2H, s), 6.70 (1H, d, J=8Hz), 6.83 (1H, t, J=8Hz), 7.35 (1H, d,J=9Hz), 7.75 (1H, d, J=8Hz), 8.37 (1H, d, J=9Hz), 8.82 (1H, br s)

(26) 3-Chloro-8-(2-trifluromethylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 164°-165° C.

NMR (CDCl₃, δ): 2.48 (3H, s), 5.40 (2H, s), 6.44 (1H, d, J=7Hz), 6.71(1H, t, J=7Hz), 7.55-7.71 (5H)

(27) 3-Chloro-8-(2-methoxycarbonylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 141°-144° C.

NMR (CDCl₃, δ) 2.48 (3H, s), 3.92 (3H, s), 5.79 (2H, s), 6.49 (1H, d,J=7.5Hz), 6.72 (1H, t, J=7.5Hz), 7.39 (1H, t, J=7.5Hz), 7.55 (1H, t,J=7.5Hz), 7.67 (1H, d, J=7.5Hz), 7.85 (1H, d, J=7.5Hz), 8.08 (1H, d,J=7.5Hz)

(28) 8-(2-Phenylbenzyloxy)-3-chloro-2-methylimidazo 1,2-a!pyridine

mp: 121°-122° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 5.19 (2H, s), 6.21 (1H, d, J=7.5Hz), 6.63(1H, t, J=7.5Hz), 7.30-7.41 (8H, m), 7.61 (1H, d, J=7.5Hz), 7.72 (1H, m)

(29) 3-Chloro-8-(2,6-difluorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 168°-170° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 5.33 (2H, s), 6.68 (1H, d, J=7.5Hz), 6.80(1H, t, J=7.5Hz), 6.87-7.00 (2H, m), 7.28-7.41 (1H, m), 7.70 (1H, d,J=7.5Hz)

(30) 3-Chloro-8-(2,6-dibromobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 157°-158° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 5.51 (2H, s), 6.69 (1H, d, J=7Hz), 6.82(1H, t, J=7Hz), 7.08 (1H, t, J=8Hz), 7.57 (2H, d, J=8Hz), 7.70 (1H, d,J=7Hz)

(31) 3-Bromo-8-(2-chloro-6-fluorobenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 130°-131° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 5.38 (2H, s), 6.70 (1H, d, J=7Hz), 6.81(1H, t, J=7Hz), 7.02 (1H, t, J=8Hz), 7.20-7.38 (2H), 7.73 (1H, d, J=7Hz)

(32) 8-(4-Bromo-2-fluorobenzyloxy)-3-chloro-2-methylimidazo1,2-a!pyridine

mp: 182°-123° C.

NMR (CDCl₃, δ) 2.47 (3H, s), 5.32 (2H, s), 6.51 (1H, d, J=7.5Hz), 6.75(1H, t, J=7.5Hz), 7.29 (2H, d, J=7.5Hz), 7.48 (1H, t, J=7.5Hz), 7.66(1H, d, J=7.5Hz)

(33) 3-Bromo-8-(2-chloro-5-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.50 (3H, s), 5.48 (2H, s), 6.53 (1H, d, J=7Hz), 6.78(1H, t, J=7Hz), 7.60 (1H, d, J=7Hz), 7.78 (1H, d, J=7Hz), 8.15 (1H, dd,J=9Hz and 2Hz), 8.52 (1H, d, J=2Hz)

(34) 3-Bromo-8-2-chloro-6-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 135°-136° C.

NMR (CDCl₃, δ) 1.89 (3H, s), 2.41 (3H, s), 3.23 (3H, s), 5.21 (1H, d,J=10Hz), 5.26 (1H, d, J=10Hz), 6.68 (1H, d, J=7.5Hz), 6.82 (1H, t,J=7.5Hz), 7.18 (1H, d, J=7.5Hz), 7.38-7.53 (2H, m), 7.74 (1H, d,J=7.5Hz)

(35) 3-Bromo-8-(2-chloro-6-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 157°-158° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 5.66 (2H, s), 6.67 (1H, d, J=7Hz), 6.82(1H, t, J=7Hz), 7.49 (1H, t, J=8Hz), 7.72 (2H, t, J=8Hz), 7.85 (1H, d,J=7Hz)

(36) 3-Bromo-8-3-(N,N-di-tert-butoxycarbonylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 154°-155° C.

NMR (CDCl₆, δ) 1.40 (18H, s), 2.43 (3H, s), 5.58 (2H, s), 6.68 (1H, d,J=7Hz), 6.79 (1H, t, J=7Hz), 7.20 (1H, d, J=8Hz), 7.38 (1H, d, J=8Hz),7.72 (1H, d, J=7Hz)

(37) 3-Bromo-8-(2,4,6-trichlorobenzyloxy)-2-methylimidazo 1,2-a!pyridine

mp: 170°-172° C.

NMR (CDCl₃, δ) 2.44 (3H, s), 5.42 (2H, s), 6.68 (1H, d, J=7Hz), 6.81(1H, t, J=7Hz), 7.49 (2H, s), 7.76 (1H, d, J=7Hz)

(38) 3-Bromo-8-(2,3,6-trichlorobenzyloxy)-2-methylimidazo-1,2-a!pyridine

mp: 183°-184° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.83(1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.46 (1H, d, J=9Hz), 7.76 (1H, d,J=7Hz)

(39) 3-Chloro-8-(2,4,6-trimethylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 154°-155° C.

NMR (CDCl₃, δ): 2.29 (3H, s), 2.38 (6H, s), 2.43 (3H, s), 5.21 (2H, s),6.63 (1H, d, J=7Hz), 6.75-6.90 (3H), 7.69 (1H, d, J=7Hz)

(40) 3-Bromo-8-(2,6-dibromo-4-methoxycarbonylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 189°-190° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 3.96 (3H, s), 5.52 (2H, s), 6.69 (1H, d,J=7Hz), 6.82 (1H, t, J=7Hz), 7.76 (1H, d, J=7Hz), 8.21 (2H, s)

(41) 3-Bromo-8-(4-benzoyl-2-chlorobenzyloxy)-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.50 (3H, s), 5.50 (2H, s), 6.52 (1H, d, J=8Hz), 6.78(1H, t, J=8Hz), 7.45-7.90 (9H)

(42) 3-Bromo-8-(2,6-dichloro-4-benzoylbenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 129°-130° C.

NMR (CDCl₃, δ) 2.46 (3H, s), 5.53 (2H, s), 6.71 (1H, d, J=7Hz), 6.83(1H, t, J=7Hz), 7.34 (1H, d, J=9Hz), 7.42-7.91 (7H)

(43) 3-Bromo-8- 4-(2-cyanophenyl)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 138°-140° C.

NMR (CDCl₃, δ) 2.49 (3H, s), 5.40 (2H, s), 6.55 (1H, d, J=8Hz), 6.75(1H, t, J=8Hz), 7.40-7.81 (9H)

(44) 3-Bromo-8-(6-chloropiperonyl)methoxy-2-methylimidazo 1,2-a!pyridine

mp: 185°-186° C.

NMR (CDCl₃, δ) 2.49 (3H, s), 5.32 (2H, s), 5.96 (2H, s), 6.49 (1H, d,J=7Hz), 6.74 (1H, t, J=7Hz), 6.88 (1H, s), 7.09 (1H, s), 7.70 (1H, d,J=7Hz)

(45) 8-(2-Bromothiophen-4-yl)methoxy-3-chloro-2-methylimidazo1,2-a!pyridine

mp: 124°-125° C.

NMR (CDCl₃, δ) 2.48 (3H, s), 5.45 (2H, s), 6.56 (1H, d, J=7Hz), 6.75(1H, t, J=7Hz), 7.09 (1H, s), 7.20 (1H, s), 7.69 (2H, d, J=7Hz)

(46) 3-Chloro-8-(3-chlorobenzofuran-2-yl)methoxy-2-methylimidazo1,2-a!pyridine

mp: 132°-134° C.

NMR (CDCl₃, δ) 2.46 (3H, s), 5.48 (2H, s), 6.71-6.82 (2H, m), 7.31-7.71(5H, m)

(47) 3-Bromo-8-3-(4-chlorophenyl)-5-methylbenzofuran-2-yl!methoxy-2-methylimidazo1,2-a!pyridine

mp: 167°-170° C.

NMR (CDCl₃, δ): 2.44 (6H, s), 5.38 (2H, s), 6.59 (1H, d, J=7Hz), 6.72(1H, t, J=7Hz), 7.18(1H, br d, J=8Hz), 7.32-7.52 (6H), 7.71 (1H, d,J=7Hz)

(48)3-Bromo-8-(4,6-dichloro-3-methyl-2-benzothiazolinon-5-yl)methoxy-2-methylimidazo1,2-a!pyridine

mp: 225°-227° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 3.87 (3H, s), 5.51 (2H, s), 6.71 (1H, d,J=7Hz), 6.83 (1H, t, J=7Hz), 7.42 (1H, s), 7.78 (1H, d, J=7Hz)

(49)3-Bromo-8-(4,6-dichloro-3-ethyl-2-benzothiazolinon-5-yl)methoxy-2-methylimidazo1,2-a!pyridine

mp: 219°-220° C.

NMR (DMSO-d₆, δ): 1.35 (3H, t, J=7.5Hz), 2.35 (3H, s), 4.43 (2H, q,J=7.5Hz), 5.52 (2H, s), 6.93-7.02 (2H, m), 7.83-7.89 (2H, m)

(50)3-Bromo-8-(5,7-dichloro-4-methyl-1,4-benzothiazin-3(4H)-on-6-yl)methoxy-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.39 (2H, s), 3.41 (3H, s), 5.47 (2H, s),6.70 (1H, d, J=8Hz), 6.84 (1H, t, J=8Hz), 7.48 (1H, s), 7.77 (1H, d,J=8Hz)

Example 4

A suspension of3-bromo-8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine(215 mg) and iron (powder, 84 mg) in a mixture of conc. hydrochloricacid (1 ml) and methanol (1 ml) was refluxed for half an hour. Thecooled mixture was poured into an ice water (15 ml). The precipitateswere collected and washed with water to give8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride (140 mg) as an off-white solid.

mp: 181°-183° C.

NMR (DMSO-d₆, δ) 2.42 (3H, s), 5.48 (2H, s), 6.95 (1H, d, J=7.5Hz), 7.24(1H, d, J=7.5Hz), 7.42 (1H, t, J=7.5Hz), 7.62 (1H, d, J=7.5Hz), 8.25(1H, d, J=7.5Hz)

Example 5

To a mixture of 3-bromo-8-(2-chloro-6-nitrobenzyloxy)-2-methylimidazo1,2-a!pyridine (300 mg), nickel(II) chloride hexahydrate (360 mg) andmethanol (9 ml) was added sodium borohydride (114 mg) portionwise underan ice-water bath cooling for 20 minutes. After stirring for 30 minutes,the mixture was concentrated in vacuo and diluted with water. The pHvalue of the mixture was adjusted to 3 and the separated crystals werecollected by filtration. The crystals were dissolved in dichloromethane,and the solution was washed with saturated aqueous solution of sodiumhydrogencarbonate, dried over magnesium sulfate and evaporated in vacuo.The residue was purified by silica gel column chromatography (3%solution of methanol in dichloromethane) and preparative thin-layerchromatography (3% solution of methanol in dichloromethane) followed bycrystallization from diethyl ether to give8-(2-amino-6-chlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridine (40mg).

mp: 177°-178° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 4.64 (2H, br s), 5.51 (2H, s), 6.57 (1H,d, J=7Hz), 6.71-6.85 (3H), 7.02 (1H, t, J=7Hz), 7.71 (1H, m)

Example 6

The following compounds were obtained according to similar manners tothose of Examples 4 or 5.

(1) 8-(3-Amino-2,4,6-trichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 217°-219° C.

NMR (DMSO-d₆, δ) 2.30 (3H, s), 5.35 (2H, s), 6.99 (2H, d, J=8Hz), 7.58(1H, s), 7.92 (1H, t, J=8Hz)

(2) 8-(3-Amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (DMSO-d₆, δ): 2.29 (3H, s), 5.31 (2H, s), 5.70 (2H, s, D₂ 0exchangeable), 6.84-7.04 (3H), 7.23 (1H, d, J=8Hz), 7.90 (1H, d, J=5Hz)

(3) 8-(5-Amino-2-chlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride

mp: >250° C. (dec.)

NMR (DMSO-d₆, δ): 2.45 (3H, s), 4.21 (2H, br s), 5.41 (2H, s), 7.03 (1H,d, J=9Hz), 7.29-7.52 (4H), 8.22 (1H, d, J=6Hz)

Example 7

To a suspension of 3-bromo-8-2,6-dichloro-3-(N-methyl-N-trifluoroacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (560 mg) in methanol (6 ml) was added 28% sodiummethoxide in methanol (1.93 g). The mixture was refluxed for one hourand cooled. The precipitated solid was filtered, washed with methanol,and dried to give3-bromo-8-(2,6-dichloro-3-methylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine (350 mg) as crystals.

mp: 184°-187° C.

NMR (CDCl₃, δ) 2.44 (3H, s), 2.91 (2H, d, J=6Hz), 4.46 (1H, m), 5.46(2H, s), 6.69 (1H, d, J=8.5Hz), 6.71 (1H, d, J=7.5Hz), 6.83 (1H, t,J=7.5Hz), 7.24 (1H, d, J=8.5Hz), 7.73 (1H, d, J=7.5Hz)

Example 8

The following compounds were obtained according to a similar manner tothat of Example 7.

(1) 3-Bromo-8-(2-chloro-5-methylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 156°-159° C.

NMR (CDCl₃, δ): 2.48 (3H, s), 2.76 (3H, s), 5.38 (2H, s), 6.43-6.52 (2H,m), 6.73 (1H, t, J=7.5Hz), 6.85 (1H, d, J=2Hz), 7.19 (1H, d, J=9Hz),7.69 (1H, d, J=7.5Hz)

(2) 3-Chloro-8-(2,6-dichloro-3-methylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine

mp: 187°-188° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 2.90 (3H, d, J=6Hz), 4.46 (1H, br q,J=6Hz), 5.45 (2H, s), 6.62 (1H, d, J=9Hz), 6.68 (1H, d, J=8Hz), 6.82(1H, t, J=8Hz), 7.24 (1H, d, J=9Hz), 7.69 (1H, d, J=8Hz)

Example 9

A mixture of 8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine dihydrochloride (100 mg) and formaldehyde (200 mg, 37% wt% solution in water) in 90% aqueous formic acid (1 ml) was refluxed for40 minutes. The cooled mixture was concentrated in vacuo. The residuewas partitioned between ethyl acetate and aqueous sodium bicarbonatesolution. The organic layer was dried and concentrated in vacuo to givean oil, which was purified by preparation thin-layer chromatography onsilica gel (ethyl acetate:n-hexane=2:1, V/V) to give3-bromo-8-(2,6-dichloro-3-dimethylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine as a white solid (31 mg).

mp: 120°-122° C.

NMR (DMSO-d₆, δ) 2.29 (3H, s), 2.76 (6H, s), 5.41 (2H, s), 6.97-7.03(2H, m), 7.33 (1H, d, J=9Hz), 7.52 (1H, d, J=9Hz), 7.90 (1H, m)

Example 10

To a mixture of8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride (100 mg) and acetone (116 mg) in 3M HCl solution inethanol (2 ml) was added sodium cyanoborohydride (25 mg) in one portion.The mixture was stirred for 2 hours at ambient temperature and thenconcentrated in vacuo. The residue was partitioned between ethyl acetateand aqueous sodium bicarbonate solution. The organic layer was dried andconcentrated in vacuo to give an oil, which was purified by preparativethin-layer chromatography on silica gel (ethyl acetate:n-hexane=1:2,V/V), to give3-bromo-8-(2,6-dichloro-3-isopropylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine as a white solid (50 mg).

mp: 133°-134° C.

NMR (CDCl₃, δ) 1.26 (6H, d, J=5Hz), 2.45 (3H, s), 3.66 (1H, m), 4.22(1H, d, J=7Hz), 5.42 (2H, s), 6.63 (1H, d, J=7.5Hz), 6.70 (1H, d,J=7.5Hz), 6.83 (1H, t, J=7.5Hz), 7.19 (1H, d, J=7.5Hz), 7.73 (1H, d,J=7.5Hz)

Example 11

The following compounds were obtained according to a similar manner tothat of Example 10.

(1)8-(3-Benzylamino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 126°-127° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 4.43 (2H, d, J=5Hz), 4.89 (1H, t, J=5Hz),5.46 (2H, s), 6.58 (1H, d, J=7.5Hz), 6.71 (1H, d, J=7.5Hz), 6.83 (1H, t,J=7.5Hz), 7.15 (1H, d, J=7.5Hz), 7.29-7.43 (5H, m), 7.72 (1H, d,J=7.5Hz)

(2) 3-Bromo-8-2,6-dichloro-3-(4-pyridylmethyl)aminobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 214°-215° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 4.47 (2H, d, J=6Hz), 5.05 (1H, t, J=5Hz),5.46 (2H, s), 6.41 (1H, d, J=7.5Hz), 6.71 (1H, d, J=7.5Hz), 6.83 (1H, t,J=7.5Hz), 7.12 (1, d, J=7.5Hz), 7.25-7.29 (2H, m), 7.74 (1H, d,J=7.5Hz), 8.59 (2H, m)

Example 12

To a suspension of8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride (100 mg) in a mixture of pyridine (0.5 ml) andN,N-diethylformamide (1.5 ml) was added methanesulfonyl chloride (27 mg)in one portion. The mixture was stirred at 60°-70° C. for one and halfhours, cooled, and poured into ice water. The separated oil wasextracted with dichloromethane. The extract was washed with water,dried, and concentrated in vacuo to give a brown oil, which was purifiedby preparative thin-layer chromatography on silica gel (5% solution ofmethanol in dichloromethane) to give 3-bromo-8- 2,6-dichloro-3-(N,N-diethylaminomethylene)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (65 mg) as crystals.

mp: 163°-165° C.

NMR (CDCl₃, δ) 1.25 (3H, t, J=7Hz), 2.44 (2H, s), 3.18-3.61 (4H, m),5.49 (2H, s), 6.68-6.85 (3H, m), 7.23 (1H, d, J=7.5Hz), 7.38 (1H, s),7.71 (1H, d, J=7.5Hz)

Example 13

The following compounds were obtained according to a similar manner tothat of Example 12.

(1) 3-Bromo-8- 2,6-dichloro-3-(N,N-dimethylaminomethylene)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 165°-167° C.

NMR (DMSO-d₆, δ): 2.29 (3H, s), 2.97 (3H, s), 3.06 (3H, s), 5.40 (2H,s), 6.95-7.02 (2H, m), 7.14 (1H, d, J=7.5Hz), 7.40 (1H, d, J=7.5Hz),7.78 (1H, s), 7.91 (1H, m)

(2) 3-Bromo-8-2,6-dichloro-3-(1-methyl-2-pyrrolidinylideneamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 178°-179° C.

NMR (CDCl₃, δ) 1.97 (2H, m), 2.32 (2H, t, J=7.5Hz), 2.45 (3H, s), 2.98(3H, s), 3.40 (2H, t, J=7.5Hz), 5.47 (2H, s), 6.69-6.82 (2H, m), 6.83(1H, d, J=7.5Hz), 7.19 (1H, d, J=7.5Hz), 7.72 (1H, d, J=7.5Hz)

Example 14

A mixture of 8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine dihydrochloride (100 mg) and acetic anhydride (100 mg) indry pyridine (2 ml) was stirred at 90° C. for one hour. The cooledmixture was poured into an ice water (10 ml). The precipitated solid wascollected, washed with water, and dried under reduced pressure to give8-(3-acetylamino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine (65 mg) as a solid.

mp: 210°-212° C.

NMR (DMSO-d₆, δ) 2.13 (3H, s), 2.29 (3H, s), 5.44 (2H, s), 6.99-7.04(2H, m), 7.59 (1H, d, J=7.5Hz), 7.84 (1H, d, J=7.5Hz), 7.92 (1H, m),9.72 (1H, s)

Example 15

To a suspension of8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride (200 mg), pyridine (1 ml) and N-methylpyrrolidone (3 ml)was added propionyl chloride (78 mg) and the mixture was stirred at 60°C. for 1 hour. To the cooled mixture was added water, and theprecipitate was collected by filtration and dissolved in chloroform.This organic solution was washed with water and brine respectively,dried with magnesium sulfate and concentrated in vacuo. The residue wascollected by filtration and washed with ethyl acetate to give3-bromo-8-(2,6-dichloro-3-propionylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine (158 mg).

mp: 205°-207° C.

NMR (CDCl₃, δ) 1.28 (3H, t, J=7Hz), 2.44 (3H, s), 2.48 (2H, q, J=7Hz),5.49 (2H, s), 6.70 (1H, d, J=7Hz), 6.82 (1H, t, J=7Hz), 7.37 (1H, d,J=9Hz), 7.69 (1H, br s), 7.76 (1H, d, J=7Hz), 8.42 (1H, d, J=9Hz)

Example 16

The following compounds were obtained according to similar manners tothose of Examples 14 or 15.

(1) 3-Bromo-8-2,6-dichloro-3-(4-methylbenzoylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 222°-223° C.

NMR (CDCl₃, δ) 2.43 (6H, s), 5.51 (2H, s), 6.71 (1H, d, J=7Hz), 6.82(1H, t, J-7Hz), 7.31 (2H, d, J=9Hz), 7.41 (1H, d, J=9Hz), 7.70-7.85(3H), 8.44 (1H, br s), 8.60 (1H, d, J=9Hz)

(2) 3-Bromo-8-2,6-dichloro-3-(4-methoxybenzoylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 211°-212° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 3.89 (3H, s), 5.51 (2H, s), 6.70 (1H, d,J=7Hz), 6.81 (1H, t, J=7Hz), 7.00 (2H, d, J=9Hz), 7.41 (1H, d, J=9Hz),7.75 (1H, d, J=7Hz), 7.88 (2H, d, J=9Hz), 8.40 (1H, br s), 8.59 (1H, d,J=9Hz)

(3) 8-(3-Benzoylamino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 208°-210° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 5.52 (2H, s), 6.71 (1H, d, J=7Hz), 6.83(1H, t, J=7Hz), 7.40-7.66 (4H), 7.75 (1H, d, J=7Hz), 7.87-7.96 (2H),8.49 (1H, br s), 8.60 (1H, d, J=9Hz)

(4) 3-Bromo-8-2,6-dichloro-3-(4-methoxycarbonylbenzoylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 238°-239° C.

NMR (DMSO-d₆, δ): 2.31 (3H, s), 3.92 (3H, s), 5.49 (2H, s), 6.97-7.08(2H, m), 7.69 (1H, d, J=8.5Hz), 7.77 (1H, d, J=8.5Hz), 7.95 (1H, dd,J=7.5Hz and 2Hz), 8.13 (4H, s)

(5) 3-Bromo-8-3-(4-chlorobenzoylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 201°-213° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 5.52 (2H, s), 6.72 (1H, d, J=7.5Hz), 6.84(1H, t, J=7.5Hz), 7.43 (1H, d, J=8.5Hz), 7.52 (2H, d, J=8.5Hz), 7.76(1H, d, J=8.5Hz), 7.86 (2H, d, J=8.5Hz), 8.41 (1H, br s), 8.57 (1H, d,J=8.5Hz)

(6) 8-(3-Diacetylamino-2,4,6-trichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 141°-142° C.

NMR (CDCl₃, δ) 2.34 (6H, s), 2.45 (3H, s), 5.48 (2H, s), 6.69 (1H, d,J=8Hz), 6.84 (1H, t, J=8Hz), 7.61 (1H, s), 7.77 (1H, d, J=8Hz)

(7) 3-Bromo-8-2-chloro-5-(N-methyl-N-trifluoroacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 142°-143° C.

NMR (CDCl₃, δ) 2.50 (3H, s), 3.31 (3H, s), 5.48 (2H, s), 6.46 (1H, d,J=7.5Hz), 6.75 (1H, d, J=7.5Hz), 7.18 (1H, dd, J=9Hz and 2Hz), 7.46-7.53(1H, m), 7.76 (1H, d, J=7.5Hz)

(8) 3-Bromo-8-2-chloro-5-(N-methyl-N-propionylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 133°-135° C.

NMR (CDCl₃, δ) 0.96 (3H, t, J=7.5Hz), 1.97 (2H, q, J=7.5Hz), 2.50 (3H,s), 3.19 (3H, s), 5.45 (2H, s), 6.50 (1H, d, J=7.5Hz), 6.76 (1H, t,J=7.5Hz), 7.11 (1H, dd, J=9Hz and 2Hz), 7.45 (1H, s), 7.48 (1H, d,J=9Hz), 7.75 (1H, d, J=7.5Hz)

(9) 3-Bromo-8-2,6-dichloro-3-(phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 228°-230° C.

NMR (CDCl₃, δ): 2.42 (1.2H, s), 2.46 (1.8H, s), 4.60 (1.8H, s), 4.71(1.2H, s), 5.47 (1.8Hz), 5.54 (1.2H, s), 6.68 (1H, d, J=8Hz), 6.81 (1H,t, J=8Hz), 7.32 (0.6H, d, J=8Hz), 7.56 (0.4H, d, J=5Hz), 7.70-7.98(5.6H), 8.28-8.40 (1.4H)

(10) 3-Bromo-8-2,6-dichloro-3-(2-phthalimidopropionylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (DMSO-d₆, δ): 1.62 (3H, d, J=6Hz), 2.28 (3H, s), 5.01 (1H, q,J=6Hz), 5.43 (2H, s), 6.93-7.04 (2H), 7.60 (2H, s), 7.82-7.97 (5H), 9.92(1H, s)

(11) 3-Bromo-8-2,6-dichloro-3-(3-phthalimidopropionylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 207°-209° C.

NMR (CDCl₃, δ): 2.41 (3H, s), 2.90 (2H, t, J=6Hz), 4.12 (2H, t, J=6Hz),5.45 (2H, s), 6.69 (1H, d, J=7Hz), 6.82 (1H, t, J=7Hz), 7.35 (1H, d,J=9Hz), 7.61-7.94 (6H), 8.31 (1H, d, J=7Hz)

(12) 3-Chloro-8- 2,6-dichloro-3-N-methyl-N-(phthalimidoacetyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 139°-141° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.25 (3H, s), 4.12 (2H, s), 5.53 (2H, s),6.71 (1H, d, J=7Hz), 6.86 (1H, d, J=7Hz), 7.52 (2H, s), 7.68-7.92 (5H)

Example 17

To a solution of3-bromo-8-(2,6-dichloro-3-methylaminobenzyloxy-2-methylimidazo1,2-a!pyridine (70 mg) in formic acid (1 ml) was added acetic anhydride(35 mg) at ambient temperature. The mixture was stirred for half an hourat the same temperature and then concentrated in vacuo. The residue waspartitioned between aqueous sodium bicarbonate solution and ethylacetate. The organic layer was dried and evaporated under reducedpressure to give 3-bromo-8-2,6-dichloro-3-(N-methyl-N-formylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (29 mg).

mp: 207°-209° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 3.23 (3H, s), 5.50 (2H, s), 6.71 (1H, d,J=7.5Hz), 6.85 (1H, t, J=7.5Hz), 7.26 (1H, d, J=10Hz), 7.45 (1H, d,J=10Hz), 7.76 (1H, d, J=7.5Hz), 8.15 (1H, s)

Example 18

To a solution of3-bromo-8-(2,6-dichloro-3-methylaminobenzyloxy)-2-methylimidazo1,2-a!-pyridine (68 mg) and pyridine (0.5 ml) in dichloromethane (2 ml)was added 4-nitrophenyl chloroformate (40 mg) at ambient temperature.After stirring for 1 hour, the mixture was partitioned betweendichloromethane and water. The aqueous layer was extracted withdichloromethane twice. The organic layers were combined, washed withwater twice and brine, dried over magnesium sulfate and evaporated invacuo. The residue was crystallized from diethyl ether to give3-bromo-8- 2,6-dichloro-3-N-methyl-N-(4-nitrophenoxycarbonyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (84 mg) as crystals.

mp: 229°-230° C.

NMR (CDCl₃ --CD₃ OD, δ) 2.41 (3H, s), 3.32 (3H, s), 5.49 (1H, d,J=10Hz), 5.57 (1H, d, J=10Hz), 6.73 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz),7.19-7.57 (4H), 7.78 (1H, d, J=7Hz), 8.20 (2H, d, J=10Hz)

Example 19

To a solution of3-bromo-8-(2-chloro-5-methylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine (60 mg), pyridine (16 mg) and 4-dimethylaminopyridine (10mg) in methylene chloride (2 ml) was added mesyl chloride (22 mg) in oneportion at 5° C., and the mixture was stirred for 9 hours at ambienttemperature. The precipitate was filtered off and the residue was washedwith methylene chloride and diethyl ether respectively. The filtrate wasconcentrated in vacuo and the residue was purified by preparativethin-layer chromatography on silica gel (methanol:methylenechloride=1:10, V/V) to give 3-bromo-8-2-chloro-5-(N-methyl-N-methylsulfonylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (25 mg).

mp: 158°-162° C.

NMR (CDCl₃, δ): 2.49 (3H, s), 2.74 (3H, s), 3.26 (3H, s), 5.44 (2H, s),6.53 (1H, d, J=7.5Hz), 6.78 (1H, t, J=7.5Hz), 7.32-7.46 (2H, m), 7.60(1H, d, J=2Hz), 7.73 (1H, d, J=7.5Hz)

Example 20

To a mixture of8-(3-amino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo 1,2-a!pyridinedihydrochloride (100 mg), pyridine (0.5 ml) and N-methylpyrrolidone (1.5ml) was added ethyl isocyanate (0.10 ml). The mixture was stirred at 60°C. for 6 hours. The insoluble material was filtered off and washed withwater. The filtrate and washings were combined and separated precipitatewas collected by filtration. The precipitate was purified by preparativethin-layer chromatography (20% solution of methanol in dichloromethane)followed by recrystallization from n-hexane to give 3-bromo-8-2,6-dichloro-3-(N'-ethylureido)benzyloxy!-2-methylimidazo 1,2-a!pyridine(13 mg) as crystals.

mp: 238°-239° C.

NMR (CDCl₃, δ): 1.00 (3H, t, J=7Hz), 2.38 (3H, s), 3.16-3.31 (2H), 5.32(2H, s), 6.67 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.19-7.32 (2H), 7.71(1H, d, J=7Hz), 7.90 (1H, br s), 8.34 (1H, d, J=9Hz)

Example 21

A mixture of 3-bromo-8- 2,6-dichloro-3-N-methyl-N-(4-nitrophenyloxycarbonyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (63 mg) and 30% solution of methylamine in methanol (2ml) was heated under reflux for 3 hours. After addition of 30% solutionof methylamine in methanol (1 ml), the mixture was heated under refluxfor additional 1 hour. The mixture was evaporated in vacuo and theresidue was extracted with ethyl acetate. The extract was evaporated invacuo and the residue was purified by preparative thin-layerchromatography (5% solution of methanol in dichloromethane) followed bycrystallization from diethyl ether to give 3-bromo-8-2,6-dichloro-3-(N-methyl-N'-methylureido)benzyloxy!-2-methylimidazo1,2-a!pyridine (28 mg) as crystals.

mp: 192°-193° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 2.79 (3H, d, J=5Hz), 3.20 (3H, s), 4.20(1H, br d, J=5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.85 (1H, t,J=7Hz), 7.32 (1H, d, J=9Hz), 7.42 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

Example 22

The following compounds were obtained according to similar manners tothose of Examples 20 or 21.

(1) 3-Bromo-8-2,6-dichloro-3-(N'-phenylureido)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: >250° C.

NMR (DMSO-d₆, δ) 2.30 (3H, s), 5.45 (2H, s), 6.91-7.10 (3H), 7.31 (2H,t, J=9Hz), 7.41-7.62 (3H), 7.92 (1H, m), 8.34 (1H, m), 8.52 (1H, br s),9.50 (1H, br s)

(2) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N'-trichloroacetylureido)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 160°-164° C. (dec.)

NMR (CDCl₃, δ) 2.43 (3H, s), 3.33 (3H, s), 5.54 (2H, s), 6.72 (1H, d,J=7.5Hz), 6.85 (1H, t, J=7.5Hz), 7.41 (1H, d, J=10Hz), 7.52 (1H, d,J=10Hz), 7.81 (1H, d, J=7.5Hz)

Example 23

To a solution of8-(3-acetylamino-2,6-dichlorobenzyloxy)-3-bromo-2-methylimidazo1,2-a!pyridine (222 mg) in N,N-dimethylformamide (2 ml) was added sodiumhydride (24 mg, 60% oil dispersion) in one portion at ambienttemperature. The mixture was stirred for half an hour at the sametemperature and iodomethane (142 mg) was added thereto. After stirringfor half an hour, the mixture was poured into water. The separated oilwas extracted with ethyl acetate. The extracts were washed with water,dried, and evaporated under reduced pressure. The residue was purifiedby flash chromatography on silica gel to give 3-bromo-8-2,6-dichloro-3-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (135 mg) as a solid.

mp: 201°-204° C.

NMR (CDCl₃, δ) 1.88 (3H, s), 2.46 (3H, s), 3.19 (3H, s), 5.52 (2H, s),6.72 (1H, d, J=7.5Hz), 6.87 (1H, t, J=7.5Hz), 7.31 (1H, d, J=8Hz), 7.48(1H, d, J=8Hz), 7.80 (1H, d, J=7.5Hz)

Example 24

The following compounds were obtained according to a similar manner tothat of Example 23.

(1) 3-Bromo-8-2,6-dichloro-3-(N-ethyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 161° C.

NMR (CDCl₃, δ) 1.15 (3H, t, J=7.5Hz), 1.83 (3H, s), 2.45 (3H, s), 3.30(1H, m), 4.12 (1H, m), 5.51 (2H, s), 6.71 (1H, d, J=7.5Hz), 6.85 (1H, t,J=7.5Hz), 7.25 (1H, d, J=7.5Hz), 7.46 (1H, d, J=7.5Hz), 7.78 (1H, d,J=7.5Hz)

(2) 3-Bromo-8-2,6-dichloro-3-(N-propyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 142°-144° C.

NMR (CDCl₃, δ) 0.91 (3H, t, J=7Hz), 1.41-1.68 (2), 1.81 (3H, s), 2.45(3H, s), 3.14 (1H, dt, J=9Hz and 7Hz), 4.03 (1H, dt, J=9Hz and 7Hz),5.51 (2H, s), 6.70 (1H, d, J=7Hz), 6.85 (1H, t, J=7Hz), 7.24 (1H, d,J=9Hz), 7.44 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(4-methoxybenzoyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 168°-169° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 3.35 (3H, s), 3.78 (3H, s), 5.45 (2H, s),6.59-6.86 (4H), 7.03-7.40 (4H), 7.76 (1H, d, J=7Hz)

(4) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N-propionylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 170°-171° C.

NMR (CDCl₃, δ) 1.08 (3H, t, J=7Hz), 2.01 (2H, q, J=7Hz), 2.43 (3H, s),3.20 (3H, s), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.84 (1H, t, J=7Hz),7.28 (1H, d, J=9Hz), 7.44 (1H, d. J=9Hz), 7.78 (1H, d, J=7Hz)

(5) 3-Bromo-8-2,4,6-trichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.84 (2.7H, s), 2.30 (0.3H, s), 2.44 (3H, s), 3.15(2.7H, s), 3.28 (0.3H, s), 5.41 (0.2H, s), 5.47 (1.8H, s), 6.70 (1H, d,J=8Hz), 6.84 (1H, t, J=8Hz), 7.53 (0.1H, s), 7.59 (0.9H, s), 7.77 (1H,d, J=8Hz)

(6) 3-Bromo-8-2,6-dichloro-3-(N-methyl-N-phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 229°-230° C.

(7) 8- 3-N-(Acetylsarcosyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.98 (0.5H, s), 2.11 (2.5H, s), 2.43 (3H, s), 2.90(0.5H, s), 3.07 (2.5H, s), 3.21 (2.5H, s), 3.24 (0.5H, s), 3.30 (1H, d,J=16Hz), 4.27 (1H, d, J=16Hz), 5.50 (2H, s), 6.70 (1H, d, J=8Hz), 6.84(1H, t, J=8Hz), 7.33 (0.17H, d, J=8Hz), 7.48 (1.6H, s), 7.51 (0.17H, d,J=8Hz), 7.78 (1H, d, J=8Hz)

(8) 3-Bromo-8-2,6-dichloro-3-(N-ethyl-N-(phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 185°-188° C.

NMR (DMSO-d₆, δ): 1.08 (3H, t, J=7Hz), 2.29 (3H, s), 3.88 (1H, d,J=16Hz), 4.11 (1H, d, J=16Hz), 5.50 (2H, s), 6.95-7.09 (3H), 7.80-8.00(6H)

(9) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(2-phthalimidopropionyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.51-1.65 (6H), 2.41 (0.9H, s), 2.42 (2.1H, s), 3.22(3H, s), 4.78 (0.3H, d, J=10Hz), 4.83 (1H, q, J=6Hz), 5.17 (0.3H, d,J=10Hz), 5.51 (1.4H, s), 6.46 (0.3H, d, J=8Hz), 6.70-6.90 (1.7H), 7.00(1H, d, J=8Hz), 7.08 (1H, d, J=8Hz), 7.31 (0.3H, d, J=8Hz), 7.48 (0.3H,d, J=8Hz), 7.67-7.82 (5H)

(10) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(3-phthalimidopropionyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 213°-215° C.

NMR (CDCl₃, δ) 2.28-2.58 (2H), 2.41 (3H, s), 3.20 (3H, s), 3.82-4.12(2H), 5.41 (1H, d, J=9Hz), 5.50 (1H, d, J=9Hz), 6.69 (2H, d, J=7Hz),6.84 (1H, t, J=7Hz) 7.31 (1H, d, J=9Hz), 7.43 (1H, d, J=9Hz), 7.61-7.90(5H)

Example 25

To a solution of3-bromo-8-(2,6-dichloro-3-acetylaminobenzyloxy)-2-methylimidazo1,2-a!pyridine (222 mg) in N,N-dimethylformamide (2 ml) was added sodiumhydride (24 mg, 60% oil dispersion) at ambient temperature. The mixturewas stirred for half an hour at the same temperature and then ethylbromoacetate (100 mg) was added thereto in one portion. The mixture wasstirred for 2 hours at the same temperature and poured into water. Theseparated oil was extracted with dichloromethane. The extract was washedwith water, dried, and concentrated in vacuo. The residue was purifiedby flash chromatography on silica gel to give an oil, which wasdissolved in a mixture of ethanol (10 ml) and 1N sodium hydroxidesolution (2 ml). The solution was refluxed for one and half hour. Theorganic solvent was removed under reduced pressure. The aqueous layerwas adjusted to pH 4 with diluted hydrochloric acid to give 3-bromo-8-2,6-dichloro-3-(N-carboxymethyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (150 mg) as a white solid.

mp: 225°-227° C. (dec.)

NMR (DMSO-d₆, δ): 1.79 (3H, s), 2.31 (3H, s), 3.78 (1H, d, J=17Hz), 4.64(1H, d, J=17Hz), 5.45 (2H, s), 6.96-7.06 (2H, m), 7.76 (2H, s), 7.95(1H, m)

Example 26

To a solution of 3-bromo-8-2-chloro-6-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (103 mg) in tetrahydrofuran (2 ml) was added lithiumaluminum hydride (16 mg) in several portions at 5° C. After theaddition, the mixture was stirred for 2 hours at 5° C. and then quenchedwith aqueous saturated ammonium chloride solution. The separated organiclayer was washed with aqueous saturated ammonium chloride solution,dried, and concentrated in vacuo. The residue was purified bypreparative thin-layer chromatography (ethyl acetate:n-hexane=1:2, V/V)to give 3-bromo-8-2-chloro-6-(N-ethyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (41 mg).

mp: 124°-126° C.

NMR (CDCl₃, δ) 1.02 (3H, t, J=7.5Hz), 2.44 (3H, s), 2.71 (3H, s), 3.03(2H, q, J=7.5Hz), 5.41 (2H, s), 6.73 (1H, d, J=7.5Hz), 6.81 (1H, t,J=7.5Hz), 7.01-7.28 (3H, m), 7.71 (1H, dd, J=7Hz and 1.5Hz)

Example 27

A mixture of 3-bromo-8-3-(N-acetoxyacetyl-N-methylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (1.42 g), potassium carbonate (761 mg), methanol (7 ml)and tetrahydrofuran (7 ml) was stirred at ambient temperature for 1hour. The mixture was partitioned between dichloromethane and water. Theaqueous layer was extracted with dichloromethane twice. The combinedorganic layers were washed with brine, dried over magnesium sulfate andevaporated in vacuo. The residue was crystallized from ethanol to give3-bromo-8-2,6-dichloro-3-(N-glycoloyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (1.16 g) as crystals.

mp: 217°-218° C.

NMR (CDCl₃, δ) 2.45 (3H, s), 3.19-3.32 (4H), 3.69, 3.82 (each 1H, d,J=15Hz), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.83 (1H, t, J=7Hz), 7.29(1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

Example 28

3-Bromo-8- 2,6-dichloro-3-N-(glycoloylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 27.

mp: 163°-165° C.

NMR (CDCl₃, δ) 2.40 (3H, s), 3.21 (3H, s), 3.29 (1H, dd, J=17Hz and4Hz), 3.94 (2H, s), 4.32 (1H, dd, J=17Hz and 9Hz), 5.31 (1H, d, J=10Hz),5.59 (1H, d, J=10Hz), 6.30 (1H, br s), 6.73 (1H, d, J=7Hz), 6.90 (1H, t,J=7Hz), 7.10 (1H, br s), 7.32 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.29(1H, d, J=7Hz)

Example 29

To a suspension of sodium hydride (60% in oil, 9 mg) inN,N-dimethylformamide (1 ml) was added 3-bromo-8-2,6-dichloro-3-(N-glycoloyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (100 mg). After stirring for 10 minutes, methyl iodide(36 mg) was added thereto and the mixture was stirred at ambienttemperature for 1 hour. To this mixture were added methyl iodide (36 mg)and N,N-dimethylformamide (1 ml). The mixture was stirred at 60° C. foradditional 2 hours. The reaction mixture was poured into water andextracted with ethyl acetate 3 times. The combined organic layers werewashed with water 4 times and brine, dried over magnesium sulfate andevaporated in vacuo. The residue was purified by preparative thin-layerchromatography (dichloromethane: methanol=20:1, V/V) followed bycrystallization from ethanol-diethyl ether to give 3-bromo-8-3-(N-methoxyacetyl-N-methylamino)-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (20 mg) as crystals.

mp: 145°-146° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 3.21 (3H, s), 3.35 (3H, s), 3.68, 3.32(each 1H, d, J=15Hz), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.85 (1H, t,J=7Hz), 7.29, 7.46 (each 1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

Example 30

To a solution of 3-bromo-8- 2,6-dichloro-3-N-(glycoloylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (200 mg) and triethylamine (76 mg) in methylene chloride(2 ml) was dropwise added mesyl chloride (52 mg) under ice-cooling, andthe mixture was stirred for 1 hour at the same temperature. The mixturewas washed with water twice and brine, dried over magnesium sulfate andconcentrated in vacuo to give 3-bromo-8- 2,6-dichloro-3-N-(mesyloxyacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (221 mg).

NMR (CDCl₃, δ): 2.48 (3H, s), 3.19 (3H, s), 3.28 (3H, s), 3.61 (1H, dd,J=17Hz and 5Hz), 4.86 (1H, dd, J=17Hz and 5Hz), 4.18 (2H, s), 5.50 (2H,s), 6.78 (1H, d, J=7Hz), 6.91 (1H, t, J=7Hz), 7.25 (1H, br s), 7.32 (1H,d, J=9Hz), 7.51 (1H, d, J=9Hz), 7.80 (1H, d, J=7Hz)

Example 31

To a solution of 3-bromo-8- 2,6-dichloro-3-N-(N-mesyloxyacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (100 mg) in methanol (2 ml) was added sodium methoxide(317 mg), and the mixture was stirred for 1 hour. Sodium methoxide (200mg) was added thereto, and the mixture was stirred for 3 hours. To thereaction mixture was added water, and the mixture was extracted withmethylene chloride 3 times. The extracts were combined, washed withbrine, dried over magnesium sulfate and concentrated in vacuo. Theresidue was purified by preparative thin-layer chromatography (methylenechloride:methanol=10:1, V/V) to give 3-bromo-8- 2,6-dichloro-3-N-(methoxyacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (60 mg).

NMR (CDCl₃, δ): 2.44 (3H, s), 3.27 (3H, s), 3.59 (1H, dd, J=17Hz and4Hz), 3.78-3.95 (3H), 5.48 (1H, d, J=9Hz), 5.52 (1H, d, J=9Hz), 6.71(1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.39 (1H, brs), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

Example 32

To a solution of 3-bromo-8-2,6-dichloro-3-(N-glycoloyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (700 mg) and triethylamine (269 mg) in methylene chloride(14 ml) was added mesyl chloride (224 mg) under ice-cooling, and themixture was stirred for 1 hour at ambient temperature. The reactionmixture was washed with water twice and brine, dried over magnesiumsulfate and concentrated in vacuo to give the residue of 3-bromo-8-2,6-dichloro-3-(N-mesyloxyacetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine. The residue was dissolved in N,N-dimethylformamide (7ml) and potassium phthalimide (362 mg) was added thereto at ambienttemperature under N₂ atmosphere. The mixture was stirred for 1 day, andwater was added thereto. The precipitate was collected by filtration anddried to give 3-bromo-8-2,6-dichloro-3-(N-methyl-N-phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (629 mg).

mp: 229°-230° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 3.26 (3H, s), 4.12 (2H, s), 5.53 (2H, s),6.72 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.52 (2H, s), 7.68-7.92 (5H,m)

Example 33

3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(phthalimidoacetylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 32.

mp: 148°-150° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.22 (3H, s), 3.53 (1H, dd, J=17Hz and4Hz), 3.80 (1H, dd, J=17Hz and 5Hz), 4.39 (2H, s), 5.48 (2H, s), 6.70(1H, d, J=7Hz), 6.78 (1H), 6.84 (1H, t, J=7Hz), 7.29 (1H, d, J=9Hz),7.45 (1H, d, J=9Hz), 7.62-7.92 (5H)

Example 34

A mixture of 3-bromo-8-2,6-dichloro-3-(N-methyl-N-phthalimidoacetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (450 mg) and hydrazine hydrate (41 mg) in methanol (5 ml)were refluxed for 30 minutes, and hydrazine hydrate (41 mg) was addedthereto, and further, the mixture was refluxed for 1.5 hours. Theresulting precipitates were filtered off and the filtrate wasconcentrated in vacuo. The residue was dissolved in chloroform and thesolution was washed with water twice and brine, dried over magnesiumsulfate and concentrated in vacuo. The residue was crystallized withdiethyl ether to give 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (338 mg).

mp: 175°-178° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 2.92-3.20 (2H), 3.23 (3H, s), 5.49 (2H,s), 6.70 (1H, d, J=7Hz), 6.83 (1H, t, J=7Hz), 7.29, 7.47 (each 1H, d,J=9Hz), 7.79 (1H, d, J=7Hz)

Example 35

The following compounds were obtained according to a similar manner tothat of Example 34.

(1) 8- 3-N-(Glycylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.22 (3H, s), 3.41 (3H, s), 3.60 (1H, dd,J=17Hz and 4Hz), 3.84 (1H, dd, J=17Hz and 4Hz), 5.49 (2H, s), 6.71 (1H,d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.34 (1H, d, J=9Hz)

(2) 8-3-(N-Glycyl-N-ethylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 169°-171° C.

NMR (CDCl₃, δ): 1.16 (3H, t, J=7Hz), 2.45 (3H, s), 2.92-3.40 (3H), 4.18(1H), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.83 (1H, t, J=7Hz), 7.22 (1H,d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8-2,6-dichloro-3-(N-DL-alanyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.11 (1.8H, d, J=6Hz), 1.15 (1.2H, d, J=6Hz), 2.45 (3H,s), 3.20 (0.4H, q, J=6Hz), 3.22 (3H, s), 3.36 (0.6H, q, J=6Hz),5.43-5.56 (2H), 6.70 (1H, d, J=8Hz), 6.84 (1H, t, J=8Hz), 7.30 (0.6Hz,d, J=8Hz), 7.33 (0.4H, d, J=8Hz), 7.45 (0.4H, d, J=8Hz), 7.48 (0.6H, d,J=8Hz), 7.77 (1H, d, J=8Hz)

(4) 8-3-(N-β-Alanyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 163°-165° C.

NMR (CDCl₃, δ) 2.10-2.25 (2H), 2.41 (3H, s), 2.85-2.99 (2H), 3.20 (3H,s), 5.50 (2H, s), 6.72 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.32 (1H, d,J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(5) 3-Chloro-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 184°-186° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 3.01 (1H, d, J=17Hz), 3.12 (1H, d,J=17Hz), 3.22 (3H, s), 5.50 (2H, s), 6.70 (1H, d, J=7Hz) 6.86 (1H, t,J=7Hz), 7.29 (1H, d, J=9Hz), 7.46 (1H, d, J=9Hz), 7.72 (1H, d, J=7Hz)

Example 36

To a solution of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (100 mg) in methylene chloride (2 ml) were added pyridine(17 mg), 4-dimethylaminopyridine (10 mg) and acetic anhydride (32 mg),and the mixture was stirred for 1.5 hours. The mixture was washed withwater twice and brine, dried over magnesium sulfate and concentrated invacuo. The residue was purified by silica gel column chromatography(methylene chloride:methanol=5:1, V/V) to give 8- 3-N-(acetylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (74 mg).

mp: 187°-189° C.

NMR (CDCl₃, δ): 2.01 (3H, s), 2.43 (3H, s), 3.24 (3H, s), 3.51, 3.78(each 1H, dd, J=17Hz and 4Hz), 5.49 (2H, s), 6.45 (1H, br s), 6.71 (1H,d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.30, 7.49 (each 1H, d, J=9Hz), 7.77(1H, d, J=7Hz)

Example 37

To a mixture of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (100 mg), pyridine (25 mg) and methylene chloride (2 ml)was added propionyl chloride (0.02 ml) at ambient temperature and themixture was stirred at the same temperature for 30 minutes. The mixturewas partitioned between methylene chloride and water, and the organiclayer was washed with water, dried over magnesium sulfate andconcentrated in vacuo to give 3-bromo-8- 2,6-dichloro-3-N-methyl-N-(propionylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (111 mg).

NMR (CDCl₃, δ): 1.25 (3H, t, J=6Hz), 2.27 (2H, q, J=6Hz), 2.43 (2.8H,s), 3.30 (0.2H, s), 3.52 (1H, dd, J=17Hz and 4Hz), 3.80 (1H, dd, J=17Hzand 4Hz), 5.48 (2H, s), 6.43 (1H, t like), 6.73 (1H, d, J=7Hz), 6.87(1H, t, J=7Hz), 7.30 (1H, d, J=8Hz), 7.47 (1H, d, J=8Hz), 7.76 (1H, d,J=7Hz)

Example 38

Pivaloyl chloride (0.04 ml) was added dropwise to a mixture oftert-butoxycarbonyl-L-proline (77 mg), N-methylmorpholine (0.04 ml) anddichloromethane (3 ml) under a dry ice-tetrachloromethane bath cooling.This mixture was stirred for 5 minutes under an ice-water bath coolingand cooled under a dry ice-tetrachloromethane bath cooling. To themixture was added a solution of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (139 mg) in dichloromethane (4 ml). The mixture wasstirred for 30 minutes at ambient temperature and washed with saturatedaqueous solution of sodium hydrogen carbonate and water. The organiclayer was dried over magnesium sulfate and evaporated in vacuo. Theresidue was purified by preparative thin-layer chromatography(dichloromethane:methanol=19:1, V/V) to give 3-bromo-8- 3-N-(tert-butoxycarbonyl-L-prolylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (72 mg) (Compound A), and 3-bromo-8-2,6-dichloro-3-(N-methyl-N-pivaloylglycylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (93 mg) (Compound B).

Compound A:

p NMR (CDCl₃, δ): 1.45 (9H, br s), 1.78-2.22 (4H), 2.43 (3H, s), 3.23(3H, s), 3.32-3.90 (4H), 4.25 (1H, m), 5.48 (2H, s), 6.72 (1H, d,J=8Hz), 6.86 (1H, t, J=8Hz), 7.31 (1H, d, J=9Hz), 7.47 (1H, d, J=9Hz),7.77 (1H, d, J=8Hz)

Compound B

NMR (CDCl₃, δ) 1.20 (9H, s), 2.44 (3H, s), 3.26 (3H, s), 3.49 (1H, dd,J=16Hz and 4Hz), 3.77 (1H, dd, J=16Hz and 4Hz), 5.48 (2H, s), 6.64 (1H,t, like), 6.72 (1H, d, J=8Hz), 6.85 (1H, t, J=8Hz), 7.31 (1H, d, J=9Hz),7.47 (1H, d, J=9Hz), 7.77 (1H, d, J=8Hz)

Example 39

A mixture of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (150 mg), 4-pentenoic acid (33 mg),N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (77 mg),1-hydroxybenzotriazole (64 mg) and N,N-dimethylformamide (1.5 ml) wasstirred for 2 hours at ambient temperature. Water was added thereto, andthe mixture was extracted with methylene chloride three times. Theorganic layers were combined, washed with water four times and brine,dried over magnesium sulfate and concentrated in vacuo. The residue waspurified by silica gel column chromatography (methylenechloride:methanol=30:1, V/V) to give 3-bromo-8- 2,6-dichloro-3-N-(4-pentenoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (172 mg).

NMR (CDCl₃, δ): 2.24-2.42 (4H), 2.44 (3H, s), 3.26 (3H, s), 3.52 (1H,dd, J=17Hz and 4Hz), 3.80 (1H, dd, J=17 and 4Hz), 4.96-5.16 (2H), 5.49(2H, s), 5.70-5.92 (1H, m), 6.46 (1H, br s), 6.72 (1H, d, J=7Hz), 6.88(1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d,J=7Hz)

Example 40

The following compounds were obtained according to similar manner tothose of Examples 36 to 39.

(1) 3-Bromo-8- 3-N-(butyrylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.94 (3H, t, J=7Hz), 1.65 (2H, m), 2.20 (2H, t, J=7Hz),2.44 (3H, s), 3.26 (3H, s), 3.52 (1H, dd, J=16Hz and 4Hz), 3.80 (1H, dd,J=16Hz and 4Hz), 5.49 (2H, s), 6.41 (1H, t like), 6.72 (1H, d, J=8Hz),6.86 (1H, t, J=8Hz), 7.31 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.77 (1H,d, J=8Hz)

(2) 3-Bromo-8- 3-N-(isobutyrylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.14 (6H, d, J=6Hz), 2.42 (1H, m), 2.44 (3H, s), 3.25(3H, s), 3.50 (1H, dd, J=16Hz and 4Hz), 3.79 (1H, dd, J=16Hz and 5Hz),5.48 (2H, s), 6.45 (1H, t like), 6.72 (1H, d, J=8Hz), 6.86 (1H, t,J=8Hz), 7.31 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.77 (1H, d, J=8Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-N-(cyclopropylcarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ) 0.70-1.00 (4H), 1.47 (1H, m), 2.44 (3H, s), 3.25 (3H, s),3.54 (1H, dd, J=16Hz and 4Hz), 3.81 (1H, dd, J=16Hz and 4Hz), 5.48 (2H,s), 6.58 (1H, t like), 6.7 (1H, d, J=8Hz), 6.86 (1H, t, J=8Hz), 7.30(1H, d, J=9Hz), 7.46 (1H, d, J=9Hz), 7.77 (1H, d, J=8Hz)

(4) 3-Bromo-8- 2,6-dichloro-3-N-(trifluoroacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.42 (3H, s), 3.29 (3H, s), 3.61 (1H, dd, J=18Hz and4Hz), 3.83 (1H, dd, J=18Hz and 4Hz), 5.48 (1H, d, J=7Hz), 5.53 (1H, d,J=7Hz), 6.71 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.31 (1H, d, J=9Hz),7.41 (1H, br s), 7.50 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(5) 8- 3-N-(Benzoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 126° C. (dec.)

NMR (CDCl₃, δ): 2.44 (3H, s), 3.29 (3H, s), 3.73 (1H, dd, J=18Hz and4Hz), 3.99 (1H, dd, J=18Hz and 4Hz), 5.48 (1H, d, J=7Hz), 5.54 (1H, d,J=7Hz), 6.73 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.18 (1H, br s),7.31-7.59 (5H), 7.72-7.88 (3H)

(6) 3-Bromo-8- 2,6-dichloro-3-N-(cyclohexylcarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.14-1.94 (1OH), 2.14 (1H, m), 2.44 (3H, s), 3.26 (3H,s), 3.50 (1H, dd, J=18Hz and 4Hz), 3.78 (1H, dd, J=18Hz and 5Hz), 5.48(2H, s), 6.43 (1H, t like), 6.72 (1H, d, J=8Hz), 6.86 (1H, t, J=8Hz),7.32 (1H, d, J=8Hz), 7.48 (1H, d, J=8Hz), 7.77 (1H, d, J=8Hz)

(7) 3-Bromo-8- 2,6-dichloro-3-N-(phenylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.21 (3H, s), 3.49 (1H, dd, J=17Hz and4Hz), 3.59 (2H, s), 3.75 (1H, dd, J=17Hz and 5Hz), 5.48 (2H, s), 6.40(1H, t like), 6.72 (1H, d, J=8Hz), 6.86 (1H, t, J=8Hz), 7.21-7.43 (6H),7.46 (1H, d, J=8Hz), 7.77 (1H, d, J=8Hz)

(8) 3-Bromo-8- 3-N-(tert-butoxycarbonyl-D-prolylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.45 (9H, br s), 1.78-2.22 (4H), 2.43 (3H, s), 3.23 (3H,s), 3.32-3.90 (4H), 4.25 (1H, m), 5.48 (2H, s), 6.72 (1H, d, J=8Hz),6.86 (1H, t, J=8Hz), 7.31 (1H, d, J=9Hz), 7.47 (1H, d, J=9Hz), 7.77 (1H,d, J=8Hz)

(9) 8- 3-N-(Acetoxyacetylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.20 (3H, s), 2.44 (3H, s), 3.26 (3H, s), 3.59 (1H, dd,J=17Hz and 4Hz), 3.82 (1H, dd, J=17Hz and 4Hz), 4.59 (2H, s), 5.46 (1H,d, J=10Hz), 5.52 (1H, d, J=10Hz), 6.71 (1H, d, J=7Hz), 6.87 (1H, t,J=7Hz), 7.11 (1H, br s), 7.31 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78(1H, d, J=7Hz)

(10) 8- 3-N-(Acetylglycyl)-N-ethylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.19 (3H, t, J=7Hz), 2.00 (3H, s), 2.42 (3H, s), 3.29(1H), 3.48 (1H, dd, J=17Hz and 5Hz), 3.72 (1H, dd, J=17Hz and 5Hz), 4.21(1H), 5.49 (2H, s), 6.46 (1H, br s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t,J=7Hz), 7.22 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(11) 8- 3-N-(Acetyl-DL-alanyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.18 (1.5H, d, J=6Hz), 1.20 (1.5H, d, J=6Hz), 1.95(1.5H, s), 1.99 (1.5H, s), 2.43 (3H, s), 3.22 (3H, s), 4.26-4.51 (1H),5.47 (1H, s), 5.51 (1H, s), 6.15 (0.5H, d, J=8Hz), 6.43 (1H, d, J=8Hz),6.65-6.90 (2H), 7.30 (0.5H, d, J=8Hz), 7.47 (0.5H, d, J=8Hz), 7.50 (1H,s), 7.76 (1H, d, J=8Hz)

(12) 8- 3-N-(Acetyl-5-alanyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.94 (3H, s), 2.10-2.30 (2H), 2.42 (3H, s), 3.20 (3H, s),3.39-3.56 (2H), 5.49 (2H, s), 6.39 (1H, br s), 6.70 (1H, d, J=7Hz), 6.85(1H, t, J=7Hz), 7.26 (1H, d, J=9Hz), 7.45 (1H, d, J=9Hz), 7.78 (1H, d,J=7Hz)

(13) 3-Bromo-8- 2,6-dichloro-3-N-(methoxycarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.42 (3H, s), 3.22 (3H, s), 3.49 (1H, dd, J=17Hz and5Hz), 3.67 (3H, s), 3.72 (1H, dd, J=17Hz and 5Hz), 5.48 (2H, s), 5.54(1H, br s), 6.71 (1H, d, J=7Hz), 6.82 (1H, t, J=7Hz), 7.31 (1H, d,J-9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(14) 3-Bromo-8- 2,6-dichloro-3-N-(valerylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.91 (3H, t, J=7Hz), 1.34 (2H, m), 1.61 (2H, m), 2.22(2H, t, J=7Hz), 2.45 (3H, s), 3.26 (3H, s), 3.52 (1H, dd, J=16Hz and4Hz), 3.80 (1H, dd, J=16Hz and 4Hz), 5.48 (2H, s), 6.41 (1H, t like),6.71 (1H, d, J=8Hz), 6.86 (1H, dd, J=8Hz and 7Hz), 7.30 (1H, d, J=9Hz),7.48 (1H, d, J=9Hz), 7.77 (1H, d, J=7Hz)

(15) 3-Bromo-8- 2,6-dichloro-3-N-(isovalerylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.90 (6H, d, J=7Hz), 2.02-2.17 (3H), 2.44 (3H, s), 3.26(3H, s), 3.52 (1H, dd, J=16Hz and 4Hz), 3.80 (1H, dd, J=16Hz and 4Hz),5.49 (2H, s), 6.39 (1H, t like), 6.72 (1H, d, J=8Hz), 6.86 (1H, dd,J=8Hz and 7Hz), 7.30 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.77 (1H, d,J=7Hz)

(16) 3-Bromo-8- 2,6-dichloro-3-N-(2-pyridylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 3.22 (3H, s), 3.54 (1H, dd, J=18Hz and5Hz), 3.76 (2H, s), 3.81 (1H, dd, J=18Hz and 5Hz), 5.48 (2H, s), 6.71(1H, d, J=7Hz), 6.85 (1H, t, J=7Hz), 7.16-7.32 (3H), 7.47 (1H, d,J=9Hz), 7.68 (1H, t, J=7Hz), 7.77 (1H, d, J=7Hz), 7.93 (1H, br t, J=5Hz)

(17) 3-Bromo-8- 2,6-dichloro-3-N-(3-pyridylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.22 (3H, s), 3.51 (1H, dd, J=17Hz and5Hz), 3.58 (2H, s), 3.79 (1H, dd, J=17Hz and 5Hz), 5.48 (2H, s), 6.50(1H, br t, J=5Hz), 6.70 (1H, d, J=7Hz), 6.85 (1H, t, J=7Hz), 7.21-7.32(2H), 7.48 (1H, d, J=9Hz), 7.66 (1H, d, J=8Hz), 7.78 (1H, d, J=7Hz),8.49-8.59 (2H)

(18) 3-Bromo-8- 2,6-dichloro-3-N-(3-ethoxycarbonylpropionylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.26 (3H, t, J=7Hz), 2.44 (3H, s), 2.49-2.69 (4H), 3.25(3H, s), 3.53 (1H, dd, J=16Hz and 4Hz), 3.79 (1H, dd, J=16Hz and 4Hz),4.13 (2H, q, J=7Hz), 5.50 (2H, s), 6.56 (1H, t like), 6.71 (1H, d,J=8Hz), 6.86 (1H, dd, J=8Hz and 6Hz), 7.30 (1H, d, J=10Hz), 7.48 (1H, d,J=10Hz), 7.77 (1H, d, J=6Hz)

(19) 3-Bromo-8- 2,6-dichloro-3-N-(bromoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.28 (3H, s), 3.57 (1H, dd, J=18Hz and4Hz), 3.80 (1H, dd, J=18Hz and 4Hz), 3.88 (2H, s), 5.49 (2H, s), 6.71(1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.39 (1H, brt, J=4Hz), 7.50 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(20) 3-Bromo-8- 2,6-dichloro-3-N-(phthalimidoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 211°-213° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 3.22 (3H, s), 3.56 (1H, dd, J=18Hz and5Hz), 3.82 (1H, dd, J=18Hz and 5Hz), 4.40 (2H, s), 5.49 (2H, s), 6.69(1H, d, J=7Hz), 6.78 (1H, br t, J=5Hz), 6.82 (1H, t, J=7Hz), 7.29 (1H,d, J=9Hz), 7.47 (1H, d, J=7Hz), 7.69-7.80 (3H), 7.82-7.92 (2H)

(21) 3-Bromo-8- 2,6-dichloro-3-N-(4-nitrophenoxycarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

mp: 166°-168° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 3.29 (3H, s), 3.60 (1H, dd, J=17Hz and5Hz), 3.81 (1H, dd, J=17Hz and 5Hz), 5.50 (2H, s), 6.05 (1H, br t,J=5Hz), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.22-7.38 (3H), 7.49(1H, d, J=9Hz), 7.79 (1H, d, J=7Hz), 8.22 (2H, d, J=9Hz)

(22) 3-Chloro-8- 2,6-dichloro-3-N-(phenylacetylgylcyl)-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridine

mp: 198°-200° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.21 (3H, s), 3.49 (1H, dd, J=15Hz and4Hz), 3.60 (2H, s), 3.76 (1H, dd, J=15Hz and 4Hz), 5.46 (2H, s), 6.40(1H, t like), 6.69 (1H, d, J=8Hz), 6.84 (1H, dd, J=8Hz and 7Hz),7.20-7.50 (7H), 7.71 (1H, d, J=6Hz)

(23) 3-Chloro-8- 2,6-dichloro-3-N-(butyrylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 103°-104° C.

NMR (CDCl₃, δ): 0.93 (3H, t, J=7Hz), 1.54-1.77 (2H), 2.20 (2H, t,J=7Hz), 2.42 (3H, s), 3.23 (3H, s), 3.51 (1H, dd, J=17Hz and 4Hz), 3.79(1H, dd, J=17Hz and 4Hz), 5.49 (2H, s), 6.41 (1H, br t, J=4Hz), 6.70(1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.47 (1H, d,J=9Hz), 7.71 (1H, d, J=7Hz)

Example 41

To a suspension of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (150 mg) in formic acid (1 ml) was added acetic anhydride(65 mg), and the mixture was stirred for 1.5 hours. Acetic anhydride (40mg) was added thereto, and the mixture was stirred for 3 hours. Themixture was concentrated in vacuo, and a saturated aqueous solution ofsodium bicarbonate was added thereto, and the mixture was extracted withmethylene chloride three times. The organic layers were combined, washedwith brine, dried over magnesium sulfate, and concentrated in vacuo. Theresidue was purified by preparative thin-layer chromatography (methylenechloride:methanol=5:1, V/V) to give 3-bromo-8- 2,6-dichloro-3-N-(formylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridine(102 mg).

mp: 211°-212° C.

NMR (CDCl₃, δ) 2.43 (3H, s), 3.26 (3H, s), 3.58 (1H, dd, J=17Hz and5Hz), 3.82 (1H, dd, J=17Hz and 5Hz), 5.47 (1H, d, J=7Hz), 5.52 (1H, d,J=7Hz), 6.61 (1H, br s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.31(1H, d, J=9Hz), 7.50 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.20 (1H, s)

Example 42

To a solution of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (98 mg) in methylene chloride (2 ml) was added methylisocyanate (0.02 ml), and the mixture was stirred for 1 hour at ambienttemperature. The mixture was concentrated in vacuo to give 3-bromo-8-2,6-dichloro-3-N-methyl-N-(N'-methylureidoacetyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (9.5 mg).

NMR (CDCl₃, δ) 2.44 (3H, s), 2.74 (3H, d, J=5Hz), 3.23 (3H, s), 3.58(1H, dd, J=16Hz and 5Hz), 4.76 (1H, br s), 5.35 (1H, t like), 5.49 (2H,s), 6.74 (1H, d, J=8Hz), 6.88 (1H, t, J=8Hz), 7.35 (1H, d, J=8Hz), 7.48(1H, d, J=8Hz), 7.78 (1H, d, J=8Hz)

Example 43

A mixture of 3-bromo-8- 2,6-dichloro-3-N-(4-nitrophenoxycarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (100 mg), 3-aminopyridine (18 mg) and dioxane (1 ml) wasrefluxed for 1.5 hours under nitrogen atmosphere. The reaction mixturewas washed with water four times and brine, dried over magnesiumsulfate, and concentrated in vacuo. The residue was purified bypreparative thin-layer chromatography (methylene chloride:methanol=10:1,V/V) to give 3-bromo-8- 2,6-dichloro-3- N-N'-(3-pyridyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (58 mg).

NMR (CDCl₃, δ): 2.40 (3H, s), 3.22 (3H, s), 3.82 (2H, d, J=5Hz), 5.42(1H, d, J=10Hz), 5.52 (1H, d, J=10Hz), 6.07 (1H, br t, J=5Hz), 6.72 (1H,d, J=7Hz), 6.89 (1H, t, J=7Hz), 7.11 (1H, dd, J=9Hz and 5Hz), 7.34 (1H,d, J=9Hz), 7.41 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz), 7.86 (1H, d,J=9Hz), 8.18 (1H, d, J=5Hz), 8.31 (1H, br s), 8.41 (1H, br s)

Example 44

The following compounds were obtained according to similar manners tothose of Examples 42 or 43.

(1) 3-Bromo-8- 2,6-dichloro-3-N-(N'-ethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 126°-127° C.

NMR (CDCl₃, δ): 1.20 (3H, t, J=7Hz), 2.42 (3H, s), 3.09-3.33 (5H), 3.56(1H, dd, J=17Hz and 5Hz), 3.80 (1H, dd, J=17Hz and 5Hz), 4.71 (1H, br t,J=5Hz), 5.32 (1H, br t, J=5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.88(1H, t, J=7Hz), 7.31 (1H, d, J=9Hz), 7.46 (1H, d, J=9Hz), 7.78 (1H, d,J=7Hz)

(2) 3-Bromo-8- 2,6-dichloro-3-N-methyl-(N'-phenylureidoacetyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 144°-147° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.22 (3H, s), 3.70 (1H, dd, J=17Hz and4Hz), 3.86 (1H, dd, J=17Hz and 4Hz), 5.49 (2H, s), 5.79 (1H, br t,J=4Hz), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.02 (1H), 7.19-7.30(5H), 7.32 (1H, d, J=9Hz), 7.42 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-N-(N'-cyclohexylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 0.98-2.01 (1OH), 2.43 (3H, s), 3.22 (3H, s), 3.42 (1H,m), 3.52 (1H, dd, J=17Hz and 5Hz), 3.80 (1H, dd, J=17Hz and 5Hz), 4.56(1H, d, J=8Hz), 5.26 (1H, br t, J=5Hz), 5.48 (2H, s), 6.71 (1H, d,J=8Hz), 6.87 (1H, t, J=8Hz), 7.32 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz),7.78 (1H, d, J=8Hz)

(4) 3-Bromo-8- 2,6-dichloro-3- N-N'-(α-naphthyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 148°-151° C.

NMR (CDCl₃, δ): 2.41 (3H, S), 3.16 (3H, s), 3.61 (1H, dd, J=18Hz and4Hz), 3.87 (1H, dd, J=18Hz and 4Hz), 5.42 (2H, s), 6.01 (1H, br t,J=4Hz), 6.69 (1H, d, J=8Hz), 6.85 (1H, t, J=8Hz), 7.18 (1H, br s), 7.25(1H, d, J=9Hz), 7.40 (1H, d, J=9Hz), 7.42-7.56 (4H), 7.62-7.92 (3H),7.99-8.10 (1H, m)

(5) 3-Bromo-8- 2,6-dichloro-3-N-(N'-benzylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.11 (3H, s), 3.57 (1H, dd, J=17Hz and5Hz), 3.82 (1H, dd, J=17Hz and 5Hz), 4.32 (2H, d, J=5Hz), 5.30 (1H, brt, J=5Hz), 5.48 (2H, s), 5.58 (1H, br t, J=5Hz), 6.71 (1H, d, J=7Hz),6.86 (1H, t, J=7Hz), 7.18-7.39 (6H), 7.46 (1H, d, J=9Hz), 7.78 (1H, d,J=7Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-N'-(m-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.29 (3H, s), 2.42 (3H, s), 3.22 (3H, s), 3.65 (1H, dd,J=17Hz and 5Hz), 3.85 (1H, dd, J=17Hz and 5Hz), 5.47 (2H, s), 5.96 (1H,br t, J=5Hz), 6.71 (1H, d, J=7Hz), 6.80-6.91 (2H), 7.00-7.39 (4H), 7.32(1H, d, J=9Hz), 7.43 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(7) 3-Bromo-8- 2,6-dichloro-3- N-N'-(p-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.30 (3H, s), 2.42 (3H, s), 3.21 (3H, s), 3.62 (1H, dd,J=17Hz and 5Hz), 3.85 (1H, dd, J=17Hz and 5Hz), 5.47 (2H, s), 5.91 (1H,br t, J=5Hz), 6.71. (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.01-7.21 (5H),7.31 (1H, d, J=9Hz), 7.43 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(8) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-methoxyphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.21 (3H, s), 3.62 (1H, dd, J=17Hz and5Hz), 3.78 (3H, s), 3.83 (1H, dd, J=17Hz and 5Hz), 5.48 (2H, s), 5.78(1H, br t, J=5Hz), 6.68-6.96 (5H), 7.12-7.25 (2H), 7.32 (1H, d, J=9Hz),7.45 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(9) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-trifluoromethylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.22 (3H, s), 3.72 (1H, dd, J=17Hz and5Hz), 3.86 (1H, dd, J=17Hz and 5Hz), 5.43 (1H, d, J=9Hz), 5.51 (1H, d,J=9Hz), 6.18 (1H, br t, J=5Hz), 6.72 (1H, d, J=7Hz), 6.89 (1H, t,J=7Hz), 7.26-7.45 (6H), 7.79 (1H, d, J=7Hz), 8.42 (1H, br s)

(10) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-fluorophenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.21 (3H, s), 3.69 (1H, dd, J=17Hz and5Hz), 3.83 (1H, dd, J=17Hz and 5Hz), 5.48 (2H, s), 5.91 (1H, br t,J=5Hz), 6.71 (1H, d, J=7Hz), 6.81-7.00 (3H), 7.16-7.29 (2H), 7.34 (1H,d, J=9Hz), 7.42 (1H, d, J=9Hz), 7.58 (1H, br s), 7.78 (1H, d, J=7Hz)

(11) 3-Bromo-8- 2,6-dichloro-3-N-(N'-n-propylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 0.90 (3H, t, J=7Hz), 1.39-1.59 (2H), 2.43 (3H, s), 3.10(2H, q, J=6Hz), 3.22 (3H, s), 3.54 (1H, dd, J=17Hz and 4Hz), 3.80 (1H,dd, J=17Hz and 4Hz), 4.73 (1H, br t, J=6Hz), 5.32 (1H, br t, J=4Hz),5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.32 (1H, d,J=9Hz), 7.48 (1H, d, J=9Hz), 7.77 (1H, d, J=7Hz)

(12) 3-Bromo-8- 2, 6-dichloro-3-N-(N'-isopropylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.12 (6H, d, J=7Hz), 2.45 (3H, s), 3.52 (1H, dd, J=17Hzand 4Hz), 3.70-3.88 (2H), 4.51 (1H, br d, J=7Hz), 5.23 (1H, br t,J=4Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.32(1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(13) 3-Bromo-8- 2,6-dichloro-3-N-(N'-allylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.22 (3H, s), 3.57 (1H, dd, J=17Hz and5Hz), 3.70-3.89 (3H), 4.94 (1H, br t, J=5Hz), 5.04-5.28 (2H), 5.42-5.55(3H), 5.83 (1H, m), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.31 (1H,d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(14) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-pyridyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.41 (3H, s), 3.20 (3H, s), 3.80 (2H, d, J=5Hz), 5.41(1H, d, J=10Hz), 5.51 (1H, d, J=10Hz), 6.19 (1H, br t, J=5Hz), 6.76 (1H,d, J=7Hz), 6.90 (1H, t, J=7Hz), 7.19 (2H, d, J=6Hz), 7.32 (1H, d,J=9Hz), 7.40 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz), 8.28 (2H, d, J=6Hz),8.95 (1H, br s)

(15) 3-Chloro-8- 2,6-dichloro-3-N-(N'-phenylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 230°-231° C.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.23 (3H, s), 3.69 (1H, dd, J=16Hz and4Hz), 3.85 (1H, dd, J=16Hz and 4Hz), 5.49 (2H, s), 5.93 (1H, t like),6.71 (1H, d, J=8Hz), 6.86 (1H, dd, J=8Hz and 7Hz), 7.20-7.37 (7H), 7.44(1H, d, J=9Hz), 7.74 (1H, d, J=7Hz)

(16) 3-Chloro-8- 2,6-dichloro-3-N-(N'-cyclohexylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 137°-140° C.

NMR (CDCl₃, δ): 0.98-1.47 (6H), 1.50-1.78 (2H), 1.81-2.00 (2H), 2.43(3H, s), 3.23 (3H, s), 3.43 (1H, m), 3.52 (1H, dd, J=16Hz and 4Hz), 3.79(1H, dd, J=16Hz and 4Hz), 4.50 (1H, d, J=10Hz), 5.21 (1H, t like), 5.48(2H, s), 6.70 (1H, d, J=8Hz), 6.86 (1H, dd, J=8Hz and 7Hz), 7.34 (1H, d,J=8Hz), 7.47 (1H, d, J=8Hz), 7.72 (1H, d, J=7Hz)

(17) 3-Chloro-8- 2,6-dichloro-3-N-(N'-ethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.11 (3H, t, J=6Hz), 2.42 (3H, s), 3.09-3.28 (5H), 3.53(1H, dd, J=17Hz and 5Hz), 3.80 (1H, dd, J=17Hz and 5Hz), 4.70 (1H, br t,J=5Hz), 5.32 (1H, br t, J=5Hz), 5.49 (2H, s), 6.70 (1H, d, J=7Hz), 6.87(1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.71 (1H, d,J=7Hz)

Example 45

To a mixture of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (100 mg), acetic acid (0.5 ml) and water (1.0 ml) wasadded an aqueous solution (1 ml) of sodium cyanate (138 mg) at 40° C.The mixture was stirred at the same temperature for 1 hour andevaporated in vacuo. The residue was partitioned into dichloromethaneand a saturated aqueous solution of sodium hydrogen carbonate and theorganic layer was separated. The aqueous layer was extracted withdichloromethane twice. The combined organic layers were washed withbrine, dried over magnesium sulfate and evaporated in vacuo. The residuewas purified by preparative thin-layer chromatography(dichloromethane:methanol=10:1, V/V) followed by crystallization fromethyl acetate-diethyl ether to give 3-bromo-8- 2,6-dichloro-3-N-methyl-N-(ureidoacetyl)amino!benzyloxy!-2-methylimidazo 1,2-a!pyridine(72 mg) as crystals.

mp: 147°-149° C.

NMR (CDCl₃, δ): 2.44 (3H, s), 3.23 (3H, s), 3.52 (1H, dd, J=17Hz and5Hz), 3.80 (1H, dd, J=17Hz and 5Hz), 4.76 (2H, br s), 5.49 (2H, s), 5.82(1H, t, J=5Hz), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.33 (1H, d,J=9Hz), 7.49 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz)

Example 46

To a solution of 3-bromo-8-2,6-dichloro-3-(N-glycyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine (150 mg) in methylene chloride (3 ml) was addedphenylisothiocyanate (86 mg), and the mixture was refluxed for 1 hourunder nitrogen atmosphere. The mixture was concentrated in vacuo, andthe residue was purified by silica gel column chromatography (methylenechloride:methanol=40:1, V/V) to give 3-bromo-8- 2,6-dichloro-3-N-(N'-phenylthioureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (190 mg).

NMR (CDCl₃, δ): 2.42 (3H, s), 3.21 (3H, s), 3.82 (1H, dd, J=18Hz and4Hz), 4.21 (1H, dd, J=18Hz and 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=8Hz),6.88 (1H, t, J=8Hz), 7.16 (1H, br s), 7.21-7.56 (7H), 7.71-7.87 (2H)

Example 47

3-Chloro-8- 2,6-dichloro-3-N-(N'-phenylthioureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 46.

mp: 135°-137° C.

NMR (CDCl₃, δ): 2.43 (3H, s), 3.22 (3H, s), 3.85 (1H, dd, J=16Hz and4Hz), 4.22 (1H, dd, J=16Hz and 4Hz), 5.51 (2H, s), 6.70 (1H, d, J=8Hz),6.87 (1H, dd, J=8Hz and 7Hz), 7.16 (1H, t like), 7.21-7.54 (6H),7.68-7.80 (2H)

Example 48

3-Bromo-8- 3-N-(tert-butoxycarbonyl-L-prolylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (67 mg) was dissolved in 4N solution of hydrogen chloridein ethyl acetate (3 ml). The solution was evaporated in vacuo to give3-bromo-8- 2,6-dichloro-3-N-(L-prolylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride (64 mg) as colorless glass.

NMR (CDCl₃ --CD₃ OD, δ) 2.00-2.20 (4H), 2.56 (3H, s), 3.26 (2.5H, s),3.31-3.97 (4.5H), 4.38 (1H, t like), 5.70 (2H, s), 7.41-7.71 (4H), 8.23(1H, d, J=8Hz)

Example 49

3-Bromo-8- 2,6-dichloro-3-N-(D-prolylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride was obtained according to a similarmanner to that of Example 48.

NMR (CDCl₃ --CD₃ OD, δ): 2.00-2.20 (4H), 2.54 (3H, s), 3.26 (2.5H, s),3.31-3.95 (4.5H), 4.38 (1H, t like), 5.72 (2H, s), 7.49-7.71 (4H), 8.29(1H, d, J=8Hz)

Example 50

A mixture of 3-bromo-8- 2,6-dichloro-3-N-(L-prolylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride (40 mg), acetic anhydride (0.01 ml),pyridine (0.03 ml) and methylene chloride (2 ml) was stirred for 2 hoursat ambient temperature. The mixture was washed with water twice, driedover magnesium sulfate, and concentrated in vacuo to give 8- 3-N-(acetyl-L-prolylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (31 mg).

NMR (CDCl₃, δ): 1.82-2.37 (7H), 2.44 (3H, s), 3.24 (3H, s), 3.34-3.89(4H), 4.58 (1H, br s), 5.48 (2H, s), 6.71 (1H, d, J=8Hz), 6.85 (1H, t,J=8Hz), 7.29-7.53 (2H), 7.77 (1H, d, J=8Hz)

Example 51

The following compounds were obtained according to a similar manner tothat of Example 50.

(1) 8- 3-N-(Acetyl-D-prolylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.82-2.37 (7H), 2.44 (3H, s), 3.24 (3H, s), 3.34-3.89(4H), 4.58 (1H, br s), 5.48 (2H, s), 6.71 (1H, d, J=8Hz), 6.85 (1H, t,J=8Hz), 7.29-7.53 (2H), 7.77 (1H, d, J=8Hz)

(2) 8- 3-N-(Acetylglycylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 220°-222° C.

NMR (CDCl₃, δ) 2.04 (3H, s), 2.41 (3H, s), 3.22 (3H, s), 3.53 (1H, dd,J=17Hz and 5Hz), 3.84 (1H, dd, J=17Hz and 5Hz), 3.38-4.00 (2H), 5.51(2H, s) 6.72 (1H, d, J=7Hz), 6.90 (11H, t, J=7Hz), 7.40 (1H, d, J=9Hz),7.52 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz)

Example 52

The following compounds were obtained according to similar manners tothose of Examples 9 or 10.

(1) 3-Bromo-8- 2,6-dichloro-3-N-(N,N-dimethylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.27 (6H, s), 2.45 (3H, s), 2.72 (1H, d, J=15Hz), 2.91(1H, d, J=15Hz), 3.20 (3H, s), 5.49 (1H, d, J=7Hz), 5.55 (1H, d, J=7Hz),6.71 (1H, d, J=7Hz), 6.85 (1H, t, J=7Hz), 7.79 (1H, d, J=9Hz), 7.45 (1H,d, J=9Hz), 7.78 (1H, d, J=7Hz)

(2) 3-Bromo-8- 2,6-dichloro-3-N-(isopropylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.98-1.09 (6H), 2.43 (3H, s), 2.72 (1H), 3.00 (1H, d,J=16Hz), 3.18 (1H, d, J=16Hz), 3.22 (3H, s), 5.51 (2H, s), 6.71 (1H, d,J=7Hz), 6.85 (1H, t, J=7Hz), 7.30 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz),7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-N-(isopropylglycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.10 (6H, d, J=6Hz), 2.43 (3H, s), 3.26 (3H, s), 3.29(2H, s), 3.56 (1H, dd, J=17Hz and 5Hz), 3.82 (1H, dd, J=17Hz and 5Hz),5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d,J=9Hz), 7.48 (1H, d, J=9Hz), 7.76 (1H, d, J=7Hz); 8.08 (1H, br t,

(4) 3-Bromo-8- 2,6-dichloro-3- N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.32 (6H, s), 2.43 (3H, s), 2.96 (2H, s), 3.25 (3H, s),3.55 (1H, dd, J=18Hz and 4Hz), 3.85 (1H, dd, J=18Hz and 4Hz), 5.50 (2H,s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49(1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 7.89 (1H, br t, J=4Hz)

(5) 3-Bromo-8- 2,6-dichloro-3-N-(benzylglycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.43 (3H, s), 3.28 (3H, s), 3.31 (2H, s), 3.58 (1H, dd,J=17Hz and 5Hz), 3.80 (2H, s), 3.84 (1H, dd, J=17Hz and 5Hz), 5.50 (2H,s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.19-7.40 (7H), 7.48 (1H,d, J=9Hz), 7.27 (1H, d, J=7Hz), 7.97 (1H, br t, J=5Hz)

Example 53

A mixture of 3-bromo-8- 2,6-dichloro-3-N-(bromoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (150 mg) and 30% solution of methylamine in methanol (2ml) was stirred for 1 hour at ambient temperature. The mixture wasconcentrated in vacuo, and the residue was purified by silica gel columnchromatography (methylene chloride:methanol=10:1, V/V) to give3-bromo-8- 2,6-dichloro-3-N-(sarcosylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (103 mg).

NMR (CDCl₃, δ) 2.45 (3H, s), 2.48 (3H, s), 3.26 (5H, s), 3.59 (1H, dd,J=17Hz and 5Hz), 3.83 (1H, dd, J=17.5Hz), 5.49 (2H, s), 6.71 (1H, d,J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz),7.78 (1H, d, J=7Hz), 7.89 (1H, br t, J=5Hz)

Example 54

The following compounds were obtained according to a similar manner tothat of Example 53.

(1) 3-Bromo-8- 2,6-dichloro-3-N-(ethylglycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.12 (3H, t, J=6Hz), 2.43 (3H, s-), 2.69 (2H, q, J=6Hz),3.26 (3H, s), 3.30 (2H, s), 3.58 (1H, dd, J=17Hz and 5Hz), 3.82 (1H, dd,J=17Hz and 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz),7.32 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 7.99 (1H,br t, J=5Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-(N-phenylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.42 (3H, s), 3.21 (3H, s), 3.60 (1H, dd, J=18Hz and5Hz), 3.80 (2H, s), 3.83 (1H, dd, J=18Hz and 5Hz), 4.39 (1H, br s), 5.49(2H, s), 6.60 (2H, d, J=6Hz), 6.68-6.90 (3H), 7.12-7.41 (4H), 7.48 (1H,d, J=9Hz), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-N-(morpholinoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ) 2.45 (3H, s), 2.50-2.62 (4H), 3.02 (2H, s), 3.26 (3H, s),3.57 (1H, dd, J=18Hz and 5Hz), 3.70-3.92 (5H), 5.50 (2H, s), 6.71 (1H,d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49 (1H, d,J=9Hz), 7.78 (1H, d, J=7Hz), 7.92 (1H, br t, J=5Hz)

Example 55

To a mixture of3-bromo-8-(2,6-dichloro-4-benzoylbenzyloxy)-2-methylimidazo1,2-a!pyridine (80 mg), sodium borohydride (18.5 mg) and ethanol (2 ml)was stirred at ambient temperature for 1 hour. The reaction mixture waspartitioned between dichloromethane and water and the aqueous layer wasextracted with dichloromethane twice. The combined organic layers werewashed with brine, dried over magnesium sulfate and evaporated in vacuo.The residue was crystallized from diethyl ether to give 3-bromo-8-2,6-dichloro-4-(α-hydroxybenzyl)benzyloxy!-2-methylimidazo1,2-a!pyridine (73 mg) as crystals.

mp: 178°-179° C.

NMR (CDCl₃, δ): 2.40 (3H, s), 2.73 (1H, br s), 5.45 (2H, dd, J=10Hz and9Hz), 6.28 (1H, s), 6.69 (1H, d, J=7Hz), 6.80 (1H, t, J=7Hz), 7.23-7.48(6H), 7.60-7.80 (2H)

Example 56

3-Bromo-8- 2,6-dichloro-3-N-(mesylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridinewas obtained according to a similar manner to that of Example 19.

NMR (CDCl₃, δ) 2.45 (3H, s), 2.97 (2.7Hz, s), 3.02 (0.3H, s), 3.27(2.7H, s), 3.30 (0.3H, s), 3.50 (1H, dd, J=16Hz and 5Hz), 3.67 (1H, dd,J=16Hz and 5Hz), 3.18 (1H, t like), 5.51 (2H, s), 6.71 (1H, d, J=8Hz),6.87 (1H, t, J=8Hz), 7.32 (1H, d, J=8Hz), 7.51 (1H, d, J=8Hz), 7.78 (1H,d, J=8Hz)

Example 57

To a mixture of3-bromo-8-(2,6-dibromo-4-methoxycarbonylbenzyloxy)-2-methylimidazo1,2-a!pyridine (550 mg), methanol (10 ml) and tetrahydrofuran (5 ml) wasadded 1N aqueous solution of sodium hydroxide (1.135 ml), and themixture was stirred for 1 hour at 60° C. The reaction mixture wasadjusted pH 4 with 1N hydrochloric acid, and water was added thereto.The precipitate was collected by filtration to give3-bromo-8-(2,6-dibromo-4-carboxybenzyloxy)-2-methylimidazo1,2-a!pyridine (518 mg).

mp: 241°-242° C.

NMR (DMSO-d₆, δ): 2.41 (3H, s), 5.62 (2H, s), 7.54 (1H, t, J=7Hz), 7.78(1H, d, J=7Hz), 8.19 (2H, s), 8.32 (1H, d, J=7Hz)

Example 58

The following compounds were obtained according to a similar manner tothat of Example 57.

(1) 3-Chloro-8-(2,6-dichlorobenzyloxyimidazo 1,2-a!pyridine-2-carboxylicacid

mp: 212°-213° C.

NMR (CDCl₃ +CD₃ OD, δ): 5.50 (2H, s), 6.82 (1H, d, J=7Hz), 7.02 (1H, t,J=7Hz), 7.22-7.48 (3H), 7.86 (1H, d, J=7Hz)

(2) 3-Bromo-8- 2,6-dichloro-3-N-(3-carboxypropionylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃ --CD₃ OD, δ): 2.30 (3H, s), 2.44 (4H, s), 3.12 (3H, s),3.68-3.86 (2H), 5.40 (2H, s), 6.69 (1H, d, J=8Hz), 6.81 (1H, dd, J=8Hzand 6Hz), 7.46 (2H, s), 7.69 (1H, d, J=6Hz)

Example 59

To a mixture of3-bromo-8-(2,6-dibromo-4-carboxybenzyloxy)-2-methylimidazo1,2-a!pyridine (100 mg), methylene chloride (2 ml) andN,N-dimethylformamide (1 drop) was added oxalyl chloride (49 mg), andthe mixture was stirred for 30 minutes and evaporated. The residue wasdissolved in methylene chloride, triethylamine (0.5 ml) and1-methylpiperazine (23 mg) were added thereto, and the mixture wasstirred for 1 hour. Water was added thereto, the mixture was extractedwith methylene chloride 3 times. The combined organic layer was washedwith brine, dried over magnesium sulfate, and concentrated in vacuo. Theresidue was purified by silica gel column chromatography (5% solution ofmethanol in methylene chloride) to give 3-bromo-8-2,6-dibromo-4-(N-methylpiperazinylcarbonyl)benzyloxy!-2-methylimidazo1,2-a!pyridine (102 mg).

mp: 188°-190° C.

NMR (CDCl₃, δ): 2.45 (3H, s), 2.48 (3H, s), 2.49-2.79 (4H), 3.56-4.02(4H), 5.50 (2H, s), 6.70 (1H, d, J=7Hz), 6.85 (1H, t, J=7Hz), 7.61 (2H,s), 7.77 (1H, d, J=7Hz)

Example 60

To a suspension of3-bromo-8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridine(200 mg) in ethanol (2 ml) was added hydrogen chloride in ethanol (3.5Mol solution, 1 ml). The solution was concentrated to half volume underreduced pressure. The separated precipitates were collected byfiltration and washed with ethanol to give3-bromo-8-(2,6-dichloro-3-nitrobenzyloxy)-2-methylimidazo 1,2-a!pyridinehydrochloride (175 mg) as an off-white solid.

mp: 195°-197° C.

NMR (DMSO-d₆, δ): 2.39 (3H, s), 5.60 (2H, s), 7.39 (1H, t, J=7.5Hz),7.56 (1H, d, J=7.5Hz), 7.92 (1H, d, J=7.5Hz), 8.25 (2H, d, J=7.5Hz)

Example 61

The following compounds were obtained according to a similar manner tothat of Example 60.

(1) 3-Bromo-8-2,6-dichloro-3-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 148°-150° C.

NMR (CDCl₃ +CD₃ OD, δ) 1.88 (3H, s), 2.68 (3H, s), 3.22 (3H, s), 5.62(1H, d, J=9Hz), 5.70 (1H, d, J=9Hz), 7.32-7.61 (4H), 8.09 (1H, d, J=6Hz)

(2) 3-Chloro-8-2,6-dichloro-3-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 145°-149° C.

NMR (CDCl₃ +CD30D, δ): 1.89 (3H, s), 2.70 (3H, s), 3.22 (3H, s), 5.61(1H, d, J=10Hz), 5.70 (1H, d, J=10Hz), 7.25-7.59 (4H), 8.01 (1H, d,J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3-(N-propionyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 146°-148° C.

NMR (CDCl₃, δ) 1.08 (3H, t, J=7Hz), 2.09 (2H, q, J=7Hz), 2.74 (3H, s),3.26 (3H, s), 5.66 (2H, br t, J=12Hz), 7.16-7.58 (4H), 8.00 (1H)

(4) 3-Bromo-8-2,4,6-trichloro-3-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 116°-120° C.

NMR (CDCl₃, δ): 1.90 (2.6H, s), 2.29 (0.4H, s), 2.70 (2.6H, s), 2.72(0.4H, s), 3.22 (2.6H, s), 3.43 (0.4H, s), 5.50-5.70 (2H), 7.18 (1H, d,J=8Hz), 7.36 (1H, t, J=8Hz), 7.52 (0.13H, s), 7.62 (0.87H, s), 7.98 (1H,d, J=8Hz)

(5) 8- 3-N-(Acetylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 175°-176° C.

NMR (DMSO-d₆, δ): 1.83, 2.40, 3.12 (each 3H, s), 3.37, 3.67 (each 1H,dd, J=16Hz and 5Hz), 5.59 (2H, s), 7.31-7.83 (4H), 8.10 (1H, t, J=5Hz),8.25 (1H, d, J=7Hz)

(6) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(propionylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ): 1.13 (3H, t, J=6Hz), 2.23 (2H, q, J=6Hz), 2.71 (3H, s),3.33 (2.8H, s), 3.47 (0.2H, s), 3.66 (1H, dd, J=16Hz and 4Hz), 3.80 (1H,dd, J=16Hz and 4Hz), 5.61 (1H, d, J=10Hz), 5.68 (1H, d, J=10Hz), 6.74(1H, t like), 7.20-7.44 (3H), 7.50 (1H, d, J=8Hz), 8.00 (1H, d, J=7Hz)

(7) 3-Bromo-8- 3-N-(butyrylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ) 0.84 (3H, t, J=7Hz), 1.49 (2H, m), 2.10 (2H, t, J=7Hz),2.40 (3H, s), 3.13 (2.4H, s), 3.30 (0.6H, s), 3.36 (1H, dd, J=16Hz and5Hz), 3.68 (1H, dd, J=16Hz and 5Hz), 5.60 (2H, s), 7.37-7.86 (4H), 8.03(1H, t like), 8.28 (1H, d, J=6Hz)

(8) 3-Bromo-8- 3-N-(isobutyrylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 0.97 (6H, d, J=6Hz), 2.40 (3H, s), 2.45 (1H, m), 3.12(2.3H, s), 3.28 (0.7H, s), 3.34 (1H, dd, J=16Hz and 5Hz), 3.67 (1H, dd,J=16Hz and 5Hz), 5.58 (2H, s), 7.36-7.84 (4H), 7.99 (1H, t like), 8.27(1H, d, J=7Hz)

(9) 3-Bromo-8- 2,6-dichloro-3-N-(cyclopropylcarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 0.53-0.72 (4H), 1.68 (1H, m), 2.39 (3H, s), 3.12(2.5H, s), 3.28 (0.5H, s), 3.40 (1H, dd, J=16Hz and 5Hz), 3.70 (1H, dd,J=16Hz and 5Hz), 5.59 (2H, s), 7.33-7.89 (4H), 8.26 (1H, d, J=7Hz), 8.34(1H, t, J=6Hz)

(10) 3-Bromo-8- 2,6-dichloro-3-N-(trifluoroacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 194°-195° C.

NMR (DMSO-d₆, δ) 2.39 (3H, s), 3.14 (3H, s), 3.51 (1H, dd, J=17Hz and5Hz), 3.78 (1H, dd, J=17Hz and 5Hz), 5.58 (2H, s), 7.39 (1H, t, J=6Hz),7.59 (1H), 7.81 (2H, s), 8.25 (1H, d, J=6Hz), 9.71 (1H, t, J=6Hz)

(11) 8- 3-N-(Benzoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 138° C. (dec.)

NMR (DMSO-d₆, δ): 2.39 (3H, s), 3.15 (3H, s), 3.58 (1H, dd, J=16Hz and6Hz), 3.89 (1H, dd, J=16Hz and 6Hz), 5.59 (2H, s), 7.34-7.64 (5H),7.77-7.93 (4H), 8.28 (1H, d, J=6Hz), 8.72 (1H, t, J=6Hz)

(12) 3-Bromo-8- 2,6-dichloro-3-N-(cyclohexylcarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 1.02-1.79 (1OH), 2.18 (1H, m), 2.39 (3H, s), 3.11(2.6H, s), 3.27 (0.4H, s), 3.31 (1H, dd, J=16Hz and 5Hz), 3.65 (1H, dd,J=16Hz and 5Hz), 5.58 (2H, s), 7.31-7.82 (4H), 7.92 (1H, t, J=5Hz), 8.26(1H, d, J=7Hz)

(13) 3-Bromo-8- 2,6-dichloro-3-N-(phenylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ) 2.38 (3H, s), 3.13 (2.5H, s), 3.27 (0.5H, s), 3.30-3.76(4H), 5.56 (2H, s), 7.14-7.85 (9H), 8.24 (1H, d, J=7Hz), 8.32 (1H, t,J=5Hz)

(14) 8- 3-N-(Acetoxyacetylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 2.21 (3H, s), 2.61 (3H, s), 3.25 (3H, s),3.59-3.88 (2H), 4.09 (1H, br s), 4.59 (1H, br s), 5.69 (2H, br s),7.35-7.68 (4H), 8.11 (1H, br s)

(15) 3-Bromo-8- 2,6-dichloro-3-N-(glycoloylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.28 (3H, s), 3.78 (2H, s), 4.09(2H, s), 5.54-5.81 (2H), 7.47-7.68 (4H), 8.14 (1H, br s)

(16) 3-Bromo-8- 2,6-dichloro-3-N-(methoxyacetylglycyl)acetyl-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 175°-177° C.

NMR (DMSO-d₆, δ): 2.40 (3H, s), 3.12 (3H, s), 3.32 (3H, s), 3.42 (1H,dd, J=17Hz and 5Hz), 3.70 (1H, dd, J=17Hz and 5Hz), 3.82 (2H, s), 5.59(2H, s), 7.34-7.79 (5H), 8.26 (1H, d, J=7Hz)

(17) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(phthalimidoacetylglycyl)amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 2.57 (3H, s), 3.26 (3H, s), 3.65 (1H, d,J=15Hz), 3.78 (1H, d, J=15Hz), 4.32 (1H, d, J=15Hz), 4.46 (1H, d,J=15Hz), 5.66 (2H, s), 7.35-7.64 (4H), 7.70-7.92 (4H), 8.08 (1H, d,J=5Hz)

(18) 8- 3-N-(Acetylglycylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ +CD₃ OD, δ) 2.01 (3H, s), 2.52 (3H, s), 3.22 (3H, s),3.56-3.70 (2H), 3.84 (2H, s), 5.70 (2H, br s), 7.51-7.72 (5H), 8.29 (1H,d, J=6Hz)

(19) 8- 3-N-(Acetylglycyl)-N-ethylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ) 1.20 (3H, t, J=7Hz), 2.00 (3H, s), 2.71 (3H, s),3.43-3.88 (3H), 4.14 (1H), 5.68 (2H, s), 6.88 (1H, br s), 7.18-7.58(3H), 8.00 (1H, br s)

(20) 8- 3-N-(Acetyl-DL-alanyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ) 1.11 (3H, d, J=6Hz), 1.94 (3H, s), 2.68 (3H, s), 3.30(3H, s), 4.36 (1H, m), 5.53-5.76 (2H), 6.60-6.80 (1H), 7.13-7.60 (4H),7.93-8.06 (1H)

(21) 8- 3-N-(Acetyl-β-alanyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 188°-190° C.

NMR (CDCl₃ +CD3OD, δ) 2.01 (3H, s), 2.12-2.72 (2H), 3.63 (3H, s), 3.20(3H, s), 3.30-3.68 (2H), 5.58 (1H, d, J=10Hz), 5.73 (1H, d, J=10Hz),7.32-7.61 (4H), 8.11 (1H, d, J=5Hz)

(22) 3-Bromo-8- 2,6-dichloro-3-N-(N,N-dimethylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

mp: 162°-164° C.

NMR (CDCl₃ +CD₃ OD, δ): 2.66 (3H, s), 3.00-3.19 (6H), 3.28 (3H, s), 4.01(1H, d, J=17Hz), 4.36 (1H, d, J=17Hz), 5.49 (1H, d, J=9Hz), 5.75 (1H, d,J=9Hz), 7.32-7.56 (2H), 7.61 (1H, d, J=9Hz), 7.15 (1H, d, J=9Hz), 8.09(1H, d, J=5Hz)

(23) 3-Bromo-8- 2,6-dichloro-3-N-(isopropylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ +CD₃ OD, δ) 1.41 (6H, br s), 2.67 (3H, br s), 3.29 (3H, brs), 3.60-3.98 (3H), 5.51 (1H, br s), 5.76 (1H, br s), 7.32-8.14 (5H)

(24) 3-Bromo-8- 2,6-dichloro-3-N-(methoxycarbonylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 176°-177° C.

NMR (CDCl₃ +CD₃ OD, δ): 2.68 (3H, s), 3.29 (3H, s), 3.50-3.79 (5H), 5.68(2H, s) 7.31-7.60 (4H), 8.02 (1H, d, J=6Hz)

(25) 3-Bromo-8- 2,6-dichloro-3-N-(mesylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridinehydrochloride

mp: 174°-176° C.

NMR (CDCl₃ --CD₃ OD, δ): 2.63 (3H, s), 3.03 (3H, s), 3.27 (3H, s), 3.60(1H, d, J=16Hz), 3.70 (1H, d, J=16Hz), 5.62 (1H, d, J=12Hz), 5.70 (1H,d, J=12Hz), 7.33-7.51 (3H), 7.58 (1H, d, J=8Hz), 8.06 (1H, d, J=6Hz)

(26) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(ureidoacetyl)amino!benzyloxy!-2-methylimidazo 1,2-a!pyridinehydrochloride

NMR (DMSO-d₆, δ) 2.40 (3H, s), 3.12 (3H, s), 3.39 (1H, d, J=17Hz), 3.61(1H, d, J=17Hz), 5.57 (1H, d, J=8Hz), 5.67 (1H, d, J=8Hz), 7.49 (1H, t,J=7Hz), 7.69 (1H, d, J=7Hz), 7.81 (2H, s), 8.31 (1H, d, J=7Hz)

(27) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(N'-methylureidoacetyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 153°-155° C.

NMR (CDCl₃, δ) 2.63 (3H, s), 2.74 (3H, s), 3.23 (3H, s), 3.85 (1H, d,J=16Hz), 3.98 (1H, d, J=16Hz), 5.57 (1H, d, J=10Hz), 5.67 (1H, d,J=10Hz), 7.30-7.60 (4H), 8.04 (1H, d, J=7Hz)

(28) 3-Bromo-8- 2,6-dichloro-3-N-(N'-ethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 0.96 (3H, t, J=7Hz), 2.41 (3H, s), 2.98 (2H, q,J=7Hz), 3.11 (3H, s), 3.30 (1H, d, J=17Hz), 3.61 (1H, d, J=17Hz), 5.56(1H, d, J=9Hz), 5.67 (1H, d, J=9Hz), 7.50 (1H, t, J=7Hz), 7.70 (1H, d,J=7Hz), 7.81 (2H, s), 8.31 (1H, d, J=7Hz) its dihydrochloride

mp: 173°-175° C.

(29) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(N'-phenylureidoacetyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 2.38 (3H, s), 3.16 (2.5H, s), 3.29 (0.5H, s), 3.42(1H, d, J=16Hz), 3.70 (1H, d, J=16Hz), 5.58 (2H, s), 6.45 (1H, br s),6.89 (1H, t, J=7Hz), 7.13-7.90 (8H), 8.26 (1H, d, J=7Hz), 8.97 (1H, s)

(30) 3-Bromo-8- 2,6-dichloro-3-N-(4-pentenoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 2.20-2.32 (4H), 2.46 (3H, s), 3.17 (3H, s), 3.56(1H, s), 3.59 (1H, s), 4.83-5.06 (2H), 5.56-5.84 (3H), 7.42-7.62 (4H),8.19 (1H, d, J=6Hz)

(31) 3-Bromo-8- 2,6-dichloro-3-N-(valerylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ) 0.90 (3H, t, J=7Hz), 1.32 (2H, m), 1.60 (2H, m), 2.22(2H, t, J=7Hz), 2.72 (3H, s), 3.33 (3H, s), 3.58-3.87 (2H), 5.60 (1H, d,J=11Hz), 5.68 (1H, d, J=11Hz), 6.76 (1H, br s), 7.21-7.45 (3H), 7.50(1H, d, J=9Hz), 8.00 (1H, d, J=6Hz)

(32) 3-Bromo-8- 2,6-dichloro-3-N-(isovalerylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ) 0.93 (6H, d, J=6Hz), 2.00-2.20 (3H), 2.73 (3H, s), 3.33(3H, s), 3.60-3.88 (2H), 5.65 (2H, s), 6.77 (1H, br s), 7.30-7.44 (3H),7.50 (1H, d, J=9Hz), 8.00 (1H, d, J=6Hz)

(33) 3-Bromo-8- 2,6-dichloro-3-N-(2-pyridylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 3.25 (3H, s), 3.35 (2H, s), 3.62(1H, d, J=17Hz), 3.82 (1H, d, J=17Hz), 5.72 (2H, s), 7.48-7.72 (4H),7.87-8.03 (2H), 8.29 (1H, d, J=6Hz), 8.48 (1H, t, J=7Hz), 8.75 (1H, d,J=6Hz)

(34) 3-Bromo-8- 2,6-dichloro-3-N-(3-pyridylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.56 (3H, s), 3.25 (3H, s), 3.60 (1H, d,J=17Hz), 3.80 (1H, d, J=17Hz), 3.93 (2H, s), 5.72 (2H, s), 7.52-7.73(4H), 8.07 (1H, dd, J=7Hz and 5Hz), 8.29 (1H, d, J=7Hz), 8.60 (1H, d,J=7Hz), 8.75 (1H, d, J=5Hz), 8.89 (1H, br s)

(35) 3-Bromo-8- 2,6-dichloro-3- N-(3-ethoxycarbonylpropionyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ): 1.23 (3H, t, J=7Hz), 2.44-2.66 (4H), 2.70 (3H, s), 3.30(3H, s), 3.63 (1H, dd, J=15Hz and 4Hz), 3.79 (1H, dd, J=15Hz and 4Hz),4.10 (2H, q, J=7Hz), 5.58 (1H, d, J=11Hz), 5.67 (1H, d, J=11Hz), 6.89(1H, br s), 7.09-7.43 (3H), 7.51 (1H, d, J=9Hz), 7.96 (1H, d, J=5Hz)

(36) 3-Bromo-8- 2,6-dichloro-3-N-(sarcosylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 2.28 (3H, s), 2.46 (3H, s), 2.98 (3H, s), 3.34(1H, d, J=16Hz), 3.52 (2H, s), 3.59 (1H, d. J=16Hz), 5.43 (2H, s),7.22-7.42 (4H), 8.00 (1H, d, J=6Hz)

(37) 3-Bromo-8- 2,6-dichloro-3- N-(ethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 1.38 (3H, t, J=6Hz), 2.56 (3H, s), 3.10 (2H, q,J=6Hz), 3.27 (3H, s), 3.61 (1H, d, J=16Hz), 3.82 (2H, s), 3.88 (1H, d,J=16Hz), 5.72 (2H, s), 7.50-7.74 (4H), 8.29 (1H, d, J=6Hz)

(38) 3-Bromo-8- 2,6-dichloro-3- N-(N-phenylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.26 (3H, s), 3.61-3.78 (2H),4.00 (2H, s), 5.71 (2H, br s), 7.02-7.20 (3H), 7.30-7.41 (2H), 7.53-7.70(4H), 8.26 (1H, d, J=6Hz)

(39) 3-Bromo-8- 2,6-dichloro-3-N-(morpholinoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 3.21 (3H, s), 5 3.30-3.48 (4H),3.59 (1H, d, J=16Hz), 3.81 (1H, d, J=16Hz), 3.85-4.07 (6H), 5.69 (2H,s), 7.50-7.69 (4H), 8.24 (1H, d, J=6Hz)

(40) 3-Bromo-8- 2,6-dichloro-3-N-(isopropylglycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.38 (6H, d, J=6Hz), 2.56 (3H, s), 3.28 (3H,s), 3.81-3.48 (3H), 3.82 (2H, s), 5.72 (2H, s), 7.49-7.73 (4H), 8.30(1H, d, J=6Hz)

(41) 3-Bromo-8- 2,6-dichloro-3- N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD30D, δ): 2.29 (3H, s), 2.68 (6H, s), 2.97 (3H, s), 3.35(1H, d, J=17Hz), 3.58 (1H, d, J=17Hz), 3.71 (2H, s), 5.42 (2H, s),7.25-7.44 (4H), 7.99 (1H, d, J=6Hz)

(42) 3-Bromo-8- 2,6-dichloro-3-N-(benzylglycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ) 2.58 (3H, s), 3.25 (3H, s), 3.62 (1H, d,J=17Hz), 3.70-3.92 (3H), 4.22 (2H, s), 5.72 (2H, s), 7.40-7.75 (9H),8.30 (1H, d, J=6Hz)

(43) 3-Bromo-8- 2,6-dichloro-3-N-(N'-cyclohexylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD30D, δ): 1.03-1.92 (1OH), 2.58 (3H, s), 3.27 (3H, s),3.44 (1H, m), 3.60 (1H, d, J=17Hz), 3.71 (1H, d, J=17Hz), 5.68 (1H, d,J=10Hz), 5.79 (1H, d, J=10Hz), 7.53-7.72 (4H), 8.79 (1H, d, J=6Hz)

(44) 3-Bromo-8- 2,6-dichloro-3- N-N'-(α-naphthyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.99 (3H, s), 3.00 (3H, s), 3.45 (1H, d,J=17Hz), 3.62 (1H, d, J=17Hz), 5.40 (2H, s), 7.02-7.50 (1OH), 7.69 (1H,d, J=9Hz), 7.91 (1H, d, J=5Hz)

(45) 3-Bromo-8- 2,6-dichloro-3-N-(N'-benzylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.48 (3H, s), 3.28 (3H, s), 3.70 (2H, s), 4.30(2H, s), 5.68 (1H, d, J=10Hz), 6.79 (1H, d, J=10Hz), 7.16-7.35 (5H),7.54-7.72 (4H), 8.29 (1H, d, J=6Hz)

(46) 3-Bromo-8- 2,6-dichloro-3- N-N'-(m-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.30 (3H, s), 2.52 (3H, s), 3.29 (3H, s), 3.72(2H, s), 5.67 (1H, d, J=10Hz), 5.79 (1H, d, J=10Hz), 6.82 (1H, m),7.09-7.19 (3H), 7.51-7.71 (4H), 8.26 (1H, d, J=5Hz)

(47) 3-Bromo-8- 2,6-dichloro-3- N-N'-(p-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.18 (3H, s), 2.42 (3H, s), 3.19 (3H, s), 3.62(2H, s), 5.59 (1H, br d, J=10Hz), 5.69 (1H, br d, J=10Hz), 6.93 (2H, d,J=9Hz), 7.10 (2H, d, J=9Hz), 7.43-7.62 (4H), 8.18 (1H, d, J=6Hz)

(48) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-methoxyphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.29 (3H, s), 372 (2H, s), 3.79(3H, s), 5.69 (1H, d, J=10Hz), 5.79 (1H, d, J=10Hz), 6.80 (2H, d,J=10Hz), 7.22 (2H, d, J=10Hz), 7.52-7.73 (4H), 8.29 (1H, d, J=6Hz)

(49) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-trifluoromethylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 3.29 (3H, s), 3.66 (1H, d,J=17Hz), 3.76 (1H, d, J=17Hz), 5.68 (1H, d, J=10Hz), 5.76 (1H, d,J=10Hz), 7.49-7.71 (8H), 8.28 (1H, d, J=6Hz)

(50) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-fluorophenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.28 (3H, s), 3.68 (1H, d,J=16Hz), 3.78 (1H, d, J=16Hz), 5.70 (1H, d, J=10Hz), 5.79 (1H, d,J=10Hz), 6.89-7.02 (2H), 7.22-7.36 (2H), 7.55-7.75 (4H), 8.80 (1H, d,J=5Hz)

(51) 3-Bromo-8- 2, 6-dichloro-3-N-(N'-n-propylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 168°-171° C.

NMR (CDCl₃ --CD30D, δ) 0.92 (3H, t, J=7Hz), 1.40-1.60 (2H), 2.55 (3H,s), 3.08 (2H, t, J=6Hz), 3.22 (3H, s), 3.58 (1H, d, J=17Hz), 3.71 (1H,d, J=17Hz), 5.69 (1H, d, J=10Hz), 5.79 (1H, d, J=10Hz), 7.53-7.77 (4H),8.31 (1H, d, J=6Hz)

(52) 3-Bromo-8- 2,6-dichloro-3-N-(N'-isopropylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃₋ CD₃ OD, δ): 1.12 (6H, d, J=6Hz), 2.56 (3H, s), 3.25 (3H, s),3.57-3.32 (3H), 5.65 (1H, d, J=10Hz), 5.78 (1H, d, J=10Hz), 7.51-7.71(4H), 8.28 (1H, d, J=6Hz)

(53) 3-Bromo-8- 2,6-dichloro-3-N-(N'-allylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.51 (3H, s), 3.20 (3H, s), 3.57-3.79 (4H),5.00-5.21 (2H), 5.57-2.90 (3H), 7.50-7.68 (4H), 8.22 (1H, d, J=6Hz)

(54) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-pyridyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.48 (3H, s), 3.19 (3H, s), 3.52 (1H, d,J=17Hz), 3.73 (1H, d, J=17Hz), 5.62 (2H, s), 7.44-7.62 (4H), 7.81 (1H,m), 8.15-8.29 (3H), 9.12 (1H, s)

(55) 3-Bromo-8- 2,6-dichloro-3- N-N'-(4-pyridyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.28 (3H, s), 3.62 (1H, d,J=17Hz), 3.84 (1H, d, J=17Hz), 5.72 (2H, s), 7.50-7.72 (4H), 7.98 (2H,d, J=6Hz), 8.26 (1H, d, J=6Hz), 8.39 (2H, d, J=6Hz)

(56) 3-Bromo-8- 2,6-dichloro-3-N-(N'-phenylthioureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.26 (3H, s), 3.92 (1H, d,J=17Hz), 4.18 (1H, d, J=17Hz), 5.74 (2H, s), 7.20-7.72 (9H), 8.27 (1H,d, J=6Hz)

(57) 3-Chloro-8- 2,6-dichloro-3-N-(N'-phenylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 157°-162° C.

NMR (DMSO-d₆, δ) 2.40 (3H, s), 3.16 (3H, s), 3.42 (1H, d, J=16Hz), 3.70(1H, d, J=16Hz), 5.60 (2H, s), 6.48 (1H, br s), 6.89 (1H, t, J=8Hz),7.12-7.90 (8H), 8.29 (1H, d, J=6Hz), 9.00 (1H, s)

(58) 3-Chloro-8- 2,6-dichloro-3-N-(N'-cyclohexylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 170°-172° C.

NMR (DMSO-d₆, δ) 0.91-1.80 (1OH), 2.43 (3H, s), 3.12 (3H, s), 3.20-3.40(2H), 3.62 (1H, d, J=16Hz), 5.58 (1H, d, J=10Hz), 5.66 (1H, dd, J=10Hz),7.45-7.85 (4H), 8.37 (1H, d, J=6Hz)

(59) 3-Chloro-8- 2,6-dichloro-3-N-(N'-ethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.10 (3H, t, J=6Hz), 2.57 (3H, s), 3.15 (2H, q,J=6Hz), 3.27 (3H, s), 3.66 (2H, s), 5.68 (1H, d, J=10Hz), 5.79 (1H, d,J=10Hz), 7.54-7.72 (4H), 8.29 (1H, d, J=6Hz)

(60) 3-Chloro-8- 2,6-dichloro-3-N-(phenylacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 2.39 (3H, s), 3.12 (2.2H, s), 3.27 (0.8H, s), 3.48(1H, dd, J=16Hz and 6Hz), 3.47 (2H, s), 3.69 (1H, dd, J=16Hz and 6Hz),5.58 (2H, s), 7.14-7.84 (9H), 8.23-8.37 (2H)

(61) 3-Chloro-8- 2,6-dichloro-3-N-(butyrylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.98 (3H, t, J=6Hz), 1.53-1.75 (2H), 2.23 (2H,t, J=6Hz), 2.57 (3H, s), 3.27 (3H, s), 3.68 (1H, s), 3.70 (1H, s), 5.70(1H, d, J=10Hz), 5.78 (1H, d, J=10Hz), 7.56-7.75 (4H), 8.30 (1H, d,J=6Hz)

(62) 3-Chloro-8- 2,6-dichloro-3-N-(N'-phenylthioureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

mp: 150°-155° C.

NMR (DMSO-d₆, δ): 2.40 (3H, s), 3.18 (3H, s), 3.80 (1H, dd, J=16Hz and4Hz), 4.23 (1H, dd, J=16Hz and 4Hz), 5.61 (2H, s), 7.11 (1H, t, J=8Hz),7.27-7.92 (8H), 7.97 (1H, br s), 8.28 (1H, d, J=6Hz), 10.15 (1H, br s)

(63) 3-Bromo-8- 2,6-dichloro-3-N-(glycylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridinedihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.56 (3H, s), 3.25 (3H, s), 3.69 (1H, d,J=17Hz), 3.72 (2H, s), 3.86 (1H, d, J=17Hz), 5.72 (2H, s), 7.50-7.78(4H), 8.31 (1H, d, J=6Hz)

Example 62

The following compounds were obtained according to similar manners tothose of Examples 1 or 2 using N-iodosuccinimide instead ofN-bromosuccinimide or N-chlorosuccinimide.

(1) 8- 2,6-Dichloro-3- N-N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-3-iodo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.31 (6H, s), 2.48 (3H, s), 2.96 (2H, s), 3.25 (3H, s),3.55 (1H, dd, J=18Hz and 5Hz), 3.85 (1H, dd, J=18Hz and 5Hz), 5.50 (2H,s), 6.72 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.48(1H, d, J=9Hz), 7.79 (1H, d, J=7Hz), 7.89 (1H, br s)

(2) 8-2,6-Dichloro-3-(N-acetyl-N-methylamino)benzyloxy!-3-iodo-2-methylimidazo1,2,a!pyridine

mp: 190°-192° C.

NMR (CDCl₃, δ) 1.84 (3H, s), 2.49 (3H, s), 3.20 (3H, s), 5.50 (2H, s),6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.30 (1H, d, J=9Hz), 7.47 (1H,d, J=9Hz), 7.80 (1H, d, J=7Hz)

Example 63

The following compounds were obtained according to similar manners tothose of Example 1 or 2.

(1) 3-Bromo-8-2,6-dichloro-4-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 82°-88° C.

NMR (CDCl₃, δ): 2.06 (3H, br s), 2.45 (3H, s), 3.28 (3H, s), 5.45 (2H,s), 6.73 (1H, d, J=7.5Hz), 6.86 (1H, t, J=7.5Hz), 7.25 (2H, s), 7.77(1H, d, J=7.5Hz)

(2) 3-Chloro-8-2,6-dichloro-4-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 74°-78° C.

NMR (CDCl₃, δ) 2.04 (3H, br s), 2.44 (3H, s), 3.28 (3H, s), 5.45 (2H,s), 6.70 (1H, d, J=7Hz), 6.84 (1H, t, J=7.0Hz), 7.25 (2H, s), 7.71 (1H,d, J=7Hz)

Example 64

The following compounds were obtained according to similar manners tothose of Example 42 or 43.

(1) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-methoxyphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.41 (3H, s), 3.22 (3H, S), 3.61-3.91 (5H), 5.47 (2H, S),5.95 (1H, br t, J=4Hz), 6.58 (1H, dd, J=7Hz and 1Hz), 6.58-6.91 (3H),7.01 (1H, t, J=1Hz), 7.13 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.42 (1H,d, J=9Hz), 7.78 (1H, d, J=7Hz)

(2) 3-Bromo-8- 3- N-N'-(3-chlorophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 151°-152° C.

NMR (CDCl₃, δ) 2.42 (3H, s), 3.21 (3H, s), 3.88 (1H, dd, J=18Hz and4Hz), 4.21 (1H, dd, J=18Hz and 4Hz), 5.50 (2H, s), 6.71 (1H, d, J=7Hz),6.88 (1H, t, J=7Hz), 7.18-7.42 (6H), 7.50 (1H, d, J=9Hz), 7.78 (1H, d,J=7Hz), 8.01 (1H, br s)

(3) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-trifluoromethylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.22 (3H, s), 3.82 (2H, br d, J=5Hz), 5.42(1H, d, J=10Hz), 5.52 (1H, d, J=10Hz), 6.07 (1H, br t, J=5Hz), 6.73 (1H,d, J=7Hz), 6.89 (1H, t, J=7Hz), 7.11-7.46 (5H), 7.65 (1H, br s), 7.79(1H, d, J=7Hz), 8.22 (1H, br s)

(4) S- 3- N-N'-(3-Acetylphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 2.54 (3H, s), 3.37 (3H, s), 3.76 (1H, dd,J=18Hz and 5Hz), 3.89 (1H, dd, J=18Hz and 5Hz), 5.44 (1H, d, J=10Hz),5.52 (1H, d, J=10Hz), 6.09 (1H, br t, J=5Hz), 6.72 (1H, d, J=7Hz), 6.88(1H, t, J=7Hz), 7.28 (1H, t, J=7Hz), 7.39 (1H, d, J=9Hz), 7.43 (1H, d,J=9Hz), 7.54 (2H, d, J=7Hz), 7.79 (1H, d, J=7Hz), 7.86 (1H, br s), 8.00(1H, br s)

(5) 3-Bromo-8- 3- N-N'-(3-cyanophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 2.40 (3H, s), 3.21 (3H, s), 3.81 (2H, d, J=5Hz), 5.42(1H, d, J=10Hz), 5.53 (1H, d, J=10Hz), 6.08 (1H, br t, J=5Hz), 6.76 (1H,d, J=7Hz), 6.90 (1H, t, J=7Hz), 7.11-7.26 (2H), 7.31-7.42 (3H), 7.66(1H, br s), 7.80 (1H, d, J=7Hz), 8.63 (1H, br s)

(6) 3-Bromo-8- 2,6-dichloro-3- N-N'-(o-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.25 (3H, s), 2.42 (3H, s), 3.21 (3H, s), 3.58 (1H, dd,J=18Hz and 4Hz), 3.85 (1H, dd, J=18Hz and 5Hz), 5.48 (2H, s), 5.72 (1H,br s), 6.37 (1H, br s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz),7.05-7.51 (6H), 7.78 (1H, d, J=7Hz)

(7) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-fluorophenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.21 (3H, s), 3.79 (2H, br t, J=5Hz), 5.43(1H, d, J=10Hz), 5.51 (1H, d, J=10Hz), 6.02 (1H, br t, J=5Hz), 6.58-6.94(4H), 7.03-7.28 (2H), 7.34 (1H, d, J=9Hz), 7.41 (1H, d, J=9Hz), 7.78(1H, d, J=7Hz), 7.98 (1H, br s)

(8) 3-Bromo-8- 3- N-N'-(3-ethylphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.20 (3H, t, J=7Hz), 2.42 (3H, s), 2.60 (2H, g, J=7Hz),3.22 (3H, s), 3.68 (1H, dd, J=18Hz and 5Hz), 3.87 (1H, dd, J=18Hz and5Hz), 5.48 (2H, s), 5.91 (1H, br t, J=5Hz), 6.71 (1H, d, J=7Hz), 6.88(1H, t, J=7Hz), 7.01-7.26 (4H), 7.32 (1H, d, J=9Hz), 7.45 (1H, d,J=9Hz), 7.78 (1H, d, J=7Hz)

(9) 8- 3-N-(N'-Benzoylureidoacetyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

mp: 187°-190° C. (dec.)

NMR (CDCl₃, δ): 2.42 (3H, s), 3.28 (3H, s), 3.71 (1H, dd, J=18Hz and5Hz), 3.96 (1H, dd, J=18Hz and 5Hz), 5.50 (2H, s), 6.71 (1H, d, J=7Hz),6.86 (1H, t, J=7Hz), 7.36 (1H, d, J=9Hz), 7.40-7.62 (4H), 7.77 (1H, d,J=7Hz), 7.83 (2H, d, J=8Hz), 8.45 (1H, br s), 9.23 (1H, br t, J=5Hz)

(10) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-nitrophenyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 160°-168° C. (dec.)

NMR (CDCl₃, δ): 2.40 (3H, s), 3.25 (3H, s), 3.83 (2H, d, J=5Hz), 5.42(1H, d, J=10Hz), 5.52 (1H, d, J=10Hz), 6.16 (1H, br t, J=5Hz), 6.77 (1H,d, J=7Hz), 6.90 (1H, t, J=7Hz), 7.23 (1H, t, J=8Hz), 7.40 (2H, s), 7.52(1H, d, J=8Hz), 7.70 (1H, dd, J=8Hz and 1Hz), 7.79 (1H, d, J=7Hz), 8.14(1H, t, J=1Hz), 8.79 (1H, s)

(11) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-ethoxycarbonylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.35 (3H, t., J=7Hz), 2.41 (3H, s), 3.25 (3H, s), 3.80(2H, dd, J=7Hz and 5Hz), 4.32 (2H, q, J=7Hz), 5.44 (1H, d, J=10Hz), 5.51(1H, d, J=10Hz), 6.01 (1H, br t, J=5Hz), 6.72 (1H, d, J=7Hz), 6.88 (1H,t, J=7Hz), 7.36 (1H, d, J=9Hz), 7.42 (1H, d, J=9Hz), 7.56-7.69 (2H),7.72-7.89 (3H)

(12) 3-Bromo-8- 2,6-dichloro-3-N-(N'-ethoxycarbonylmethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 194°-196° C.

NMR (CDCl₃, δ): 1.28 (3H, t, J=7Hz), 2.42 (3H, s), 3.22 (3H, s), 3.57(1H, dd, J=18Hz and 5Hz), 3.80 (1H, dd, J=18Hz and 5Hz), 3.92 (2H, d,J=5Hz), 4.20 (2H, q, J=7Hz), 5.38 (1H, br t, J=5Hz), 5.49 (2H, s), 5.62(1H, br t, J=5Hz), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H,d, J=9Hz), 7.47 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

Example 65

A mixture of 2-thiophenecarboxylic acid (60 mg), triethylamine (52 mg)and diphenylphosphoryl azide (135 mg) in dry toluene (0.6 ml) wasrefluxed. After 1 hour, to the cooled mixture was added a solution of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (200 mg) in dry dichloromethane (1 ml), and the mixturewas stirred at ambient temperature. After 1 hour, to the mixture wasadded 2-thiophenecarboxylic acid (60 mg), triethylamine (52 mg) anddiphenylphosphoryl azide (135 mg). The mixture was refluxed for 1 hour.The reaction mixture was washed with water twice and brine. The organiclayer was dried over magnesium sulfate and evaporated in vacuo. Theresidue was purified by silica gel column chromatography (ethylacetate:methanol=50:1, V/V) followed by preparative thin layerchromatography (dichloromethane: methanol=10:1, V/V) to give 3-bromo-8-2,6-dichloro-3- N-N'-(2-thienyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (201 mg) as amorphous.

NMR (CDCl₃, δ): 2.42 (3H, s), 3.29 (3H, s), 3.71 (1H, dd, J=18Hz and4Hz), 3.97 (1H, dd, J=18Hz and 5Hz), 5.50 (2H, s), 6.71 (1H, d, J=7Hz),6.88 (1H, t, J=7Hz), 7.00 (1H, br s), 7.09 (1H, dd, J=5Hz and 4Hz), 7.34(1H, d, J=9Hz), 7.42-7.60 (3H), 7.78 (1H, d, J=7Hz)

Example 66

3-Bromo-8- 3- N-N'-(3-carboxyphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 57.

mp: 248°-250° C.

NMR (DMSO-d₆, δ): 2.30 (3H, s), 3.18 (3H, s), 3.43 (1H, dd, J=18Hz and5Hz), 3.69 (1H, dd, J=18Hz and 5Hz). 5.49 (2H, s), 6.42 (1H, br t.J=5Hz). 6.94-7.07 (2H), 7.32 (1H, t, J=7Hz), 7.42-7.62 (2H), 7.30 (2H,s), 7.93 (1H, m), 8.02 (1H, br s), 9.09 (1H, s)

Example 67

To a solution of 3-bromo-8- 3- N-N'-(3-carboxyphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (200 mg) and dimethylamine hydrochloride (31 mg) inN,N-dimethylformamide (2 ml) were addedN-ethyl-N'-(3-dimethylaminopropyl)carbodiimide (64 mg) and1-hydroxybenzotriazole (64 mg), and the mixture was stirred for 1 hourat ambient temperature. Water was added thereto, and the mixture wasextracted with ethyl acetate three times. The organic layer was washedwith water for times and brine, dried over magnesium sulfate andconcentrated in vacuo. The residue was purified by a silica gel columnchromatography (methylene chloride:methanol=20:1, V/V) to give3-bromo-8- 3- N- N'-3-(N,N-dimethylcarbamoyl)phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (189 mg).

NMR (CDCl₃, δ): 2.41 (3H, s), 2.95 (3H, br s), 3.09 (3H, br s), 3.22(3H, s), 3.64 (1H, dd, J=17Hz and 5Hz), 3.82 (1H, dd, J=17Hz and 5Hz),5.48 (2H, s), 6.06 (1H, br t, J=5Hz), 6.72 (1H, d, 7Hz), 6.88 (1H, t,J=7Hz), 6.99 (1H, d, J=8Hz), 7.20 (1H, t, J=8Hz), 7.30-7.49 (4H), 7.78(1H, d, J=7Hz), 8.11 (1H, s)

Example 68

3-Bromo-8- 2,6-dichloro-3- N- N-3-(N-methylcarbamoyl)propionyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 67.

NMR (CDCl₃, δ): 2.40-2.63 (7H), 2.79 (3H, d, J=5Hz), 3.25 (3H, s), 3.52,3.80 (each 1H, dd, J=18Hz and 5Hz), 5.48 (2H, s), 6.01 (1H, br s),6.62-6.76 (2H), 6.86 (1H, t, J=7Hz), 7.31, 7.48 (each 1H, d, J=9Hz),7.78 (1H, d, J=7Hz)

Example 69

To a mixture of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine (200 mg), triethylamine (0.1 ml) and dichloromethane (2ml) was added bromoacetyl chloride (0.042 ml) in a dry ice-acetone bath.After 20 minutes, to the mixture was added 50% aqueous solution ofdimethylamine (0.42 ml). The mixture was stirred for 1 hour at ambienttemperature. The reaction mixture was washed with aqueous sodiumbicarbonate solution, water and brine. The organic layer was dried overmagnesium sulfate and evaporated in vacuo. The residue was purified by asilica gel column chromatography (dichloromethane:methanol=20:1, V/V) toyield colorless crystals (191 mg) of 3-chloro-8- 2,6-dichloro-3- N-N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine.

mp: 171°-172° C.

NMR (CDCl₃, δ): 2.31 (6H, s), 2.44 (3H, s), 2.96 (2H, s), 3.23 (3H, s),3.56 (1H, dd, J=18Hz, and 4Hz), 3.85 (1H, dd, J=18Hz and 4Hz), 5.49 (2H,s), 6.70 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49(1H, d, J=9Hz), 7.72 (1H, d, J=7Hz), 7.89 (1H, br s)

Example 70

The following compounds were obtained according to similar manners tothose of Examples 53 or 69.

(1) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-ethyl-N-methylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 168°-170° C.

NMR (CDCl₃, δ) 1.09 (3H, t, J=7Hz), 2.30 (3H, s), 2.43 (3H, s). 2.50(2H, q, J=7Hz), 2.99 (2H, s), 3.25 (3H, s), 3.56 (1H, dd, J=17Hz and5Hz), 3.85 (1H, dd, J=17Hz and 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz),6.87 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H,d, J=7Hz), 8.01 (1H, br s)

(2) 3-Bromo-8- 3- N-N-(N-cyclopropylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.39-0.53 (4H), 2.22 (1H, m), 2.42 (3H), 3.25 (3H, s),3.38 (2H, s), 3.55 (1H, dd, J=18Hz and 4Hz), 3.82 (1H, dd, J=18Hz and4Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.31 (1H,d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.68 (1H, br s), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 3- N-N-(N-cyclohexylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 182°-184° C.

NMR (CDCl₃, δ) 0.98-1.31 (5H), 1.52-1.95 (5H), 2.39 (1H, m), 2.43 (3H,s), 3.24 (3H, s), 3.30 (2H, s), 3.56 (1H, dd, J=18Hz and 4Hz), 3.82 (1H,dd, J=18Hz and 4Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t,J=7Hz), 7.31 (1H, d, J=9Hz), 7.47 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz),8.11 (1H, br s)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(1-pyrrolidinylacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.72-1.90 (4H), 2.42 (3H, s), 2.57-2.70 (4H), 3.16 (2H,s3), 3.25 (3H, s), 3.57 (1H, dd, J=18Hz and 5Hz), 3.87 (1H, dd, J=18Hzand 5Hz), 5.50 (2H, s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.32(1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 7.89 (1H, brs)

(5) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(piperidinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.38-1.72 (6H), 2.39-2.55 (7H), 2.94 (2H, s), 3.27 (3H,s), 3.55 (1H, dd, J=18Hz and 4Hz), 3.83 (1H, dd, J=18Hz and 4Hz), 5.50(2H, s), 6.71 (1H, d, J=7Hz), 6.87 (1H, t, J=7Hz), 7.31 (1H, d, J=9Hz),7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.08 (1H, br s)

(6) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N-4-(4-pyridyl)-1-piperazinyl!acetyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 2.61-2.78 (4H), 3.09 (2H, s), 3.26 (3H,s), 3.34-3.49 (4H), 3.58 (1H, dd, J=18Hz and 4Hz), 3.88 (1H, dd, J=18Hzand 4Hz), 5.48 (1H, d, J=10Hz), 5.52 (1H, d, J=10Hz), 6.61-6.78 (3H),6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.50 (1H, d, J=9Hz), 7.78 (1H,d, J=7Hz), 7.92 (1H, br t, J=4Hz), 8.29 (2H, br d, J=6Hz)

(7) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-isopropyl-N-methylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 150°-151° C.

NMR (CDCl₃, δ) 1.02 (6H, d, J=6Hz), 2.38 (3H, S), 2.42 (3H, s), 2.85(1H, m), 3.00 (2H, s), 3.25 (3H, s), 3.55 (1H, dd, J=18Hz and 5Hz), 3.85(1H, dd, J=18Hz and 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H,t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.76 (1H, d,J=7Hz), 8.12 (1H, br s)

(8) 3-Bromo-8- 3- N-N-(N-cyclohexyl-N-methylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.00-1.33 (6H), 1.70-1.90 (4H), 2.31 (3H, s), 2.38 (1H,m), 2.42 (3H, s), 3.02 (2H, s), 3.25 (3H, s), 3.56 (1H, dd, J=18Hz and5Hz), 3.83 (1H, dd, J=18Hz and 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz),6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H,d, J=7Hz), 8.19 (1H, br s)

(9) 3-Bromo-8- 3- N-N-(N-cycloheptylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.29-1.92 (12H), 2.43 (3H, s), 2.62 (1H, m), 3.24 (3H,s), 3.28 (2H, s), 3.58 (1H, dd, J=18Hz and 5Hz), 3.82 (1H, dd, J=18Hzand 5Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.31(1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.10 (1H, brs)

(10) 3-Bromo-8- 3- N-N-(N-cyclopentylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ) 1.23-1.90 (8H), 2.42 (3H, s), 3.09 (1H, m), 3.24 (3H, s),3.28 (2H, s), 3.56 (1H, dd, J=18Hz and 5Hz), 3.82 (1H, dd, J=18Hz and5Hz), 5.49 (2H, s), 6.72 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.31 (1H,d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.00 (1H, br s)

(11) 3-Bromo-8- 3- N-N-(N-cyclooctylglycyl)glycyl!-N-methylamino!-2,6-dichlobenzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ): 1.35-1.85 (14H), 2.42 (3H, s), 2.65 (1H, m), 3.27 (5H,s), 3.58 (1H, dd, J=18Hz and 5Hz), 3.82 (1H, dd, J=18Hz and 5Hz), 5.50(2H, s), 6.71 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz),7.49 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz), 8.10 (1H, br s)

(12) 3-Bromo-8- 3- N-N-(N-cycloheptyl-N-methylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.28-1.92 (12H), 2.29 (3H, s), 2.15 (3H, s), 2.60 (1H,m), 3.01 (2H, s), 3.25 (3H, s), 3.56 (1H, dd, J=18Hz and 5Hz), 3.85 (1H,dd, J=18Hz and 5Hz), 5.50 (2H, s), 6.72 (1H, d, J=7Hz), 6.88 (1H, t,J=7Hz), 7.32 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.79 (1H, d, J=7Hz),8.18 (1H, br s)

(13) 3-Bromo-8- 2,6-dichloro-3- N-N-(hexamethyleneiminoacetyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.58-1.78 (8H), 2.42 (3H, s), 2.63-2.73 (4H), 3.13 (2H,s), 3.28 (3H, s), 3.58 (1H, dd, J=18Hz and 5Hz), 3.83 (1H, dd, J=18Hzand 5Hz), 5.50 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32(1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.12 (1H, brs)

(14) 8- 3- N- N-N-(1-Adamantyl)glycyl!glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.49-1.74 (12H), 1.99-2.12 (3H), 2.43 (3H, s), 3.25 (5H,s), 3.56 (1H, dd, J=18Hz and 5Hz), 3.82 (1H, dd, J=18Hz and 5Hz), 5.50(2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz),7.49 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz), 8.25 (1H, br s)

(15) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N-N-(piperidino)glycyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 242°-243° C.

NMR (CDCl₃ --CD₃ OD, δ): 1.50-1.90 (4H), 2.06-2.34 (2H), 2.42 (3H, s),2.66 (1H, m), 3.22 (3H, s, 3.52-3.87 (5H), 4.53 (2H, s), 5.50 (2H, s),6.73 (1H, d, J=7Hz), 6.89 (1H, t, J=7Hz), 7.44 (1H, d, J=9Hz), 7.52 (1H,d, J=9Hz), 7.79 (1H, d, J=7Hz)

(16) 3-Bromo-8- 2,6-dichloro-3- N- N-N-(2-furylmethyl!glycyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.25 (3H, s), 3.30 (2H, s), 3.56 (1H, dd,J=18Hz and 5Hz), 3.72-3.91 (3H), 5.50 (2H, s), 6.20 (1H, d, J=2Hz), 6.30(1H, m), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.29-7.39 (2H), 7.48(1H, d, J=9Hz), 7.77 (1H, d, J=7Hz), 7.88 (1H, br s)

(17) 3-Bromo-8- 2,6-dichloro-3- N-N-(N,N-diethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

mp: 159°-160° C.

NMR (CDCl₃, δ): 1.06 (6H, t, J=7Hz), 2.43 (3H, s), 2.58 (4H, , J=7Hz),3.02 (2H, s), 3.26 (3H, s), 3.55 (1H, dd, J=18Hz and 4Hz), 3.84 (1H, dd,J=18Hz and 4Hz), 5.49 (2H, s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz),7.31 (1H, d, J=9Hz), 7.48 (1H, d, J=9Hz), 7.76 (1H, d, J=7Hz), 8.18 (1H,br s)

(18) 3-Bromo-8- 2,6-dichloro-3- N-N-(1-imidazolylacetyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ) 2.42 (3H, s), 3.21 (3H, s), 3.52 (1H, dd, J=18Hz and4Hz), 3.79 (1H, dd, J=18Hz and 5Hz), 4.68 (2H, s), 5.49 (2H, s), 6.49(1H, br s), 6.71 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.00 (1H, s), 7.19(1H, s), 7.30 (1H, d, J=9Hz), 7.49 (1H, d, J=9Hz), 7.55 (1H, s), 7.78(1H, d, J=7Hz)

Example 71

To a solution of 3-bromo-8- 2,6-dichloro-3-N-(N-bromoacetylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (200 mg) in N,N-dimethylformamide (2 ml) was added sodiummethanethiolate (35 mg), and the mixture was stirred for 5 hours atambient temperature under nitrogen atmosphere. The reaction mixture wasconcentrated in vacuo, the residue was dissolved in methylene chloride.The solution was washed with water four times and brine, dried overmagnesium sulfate and concentrated in vacuo. The residue was purified bya silica gel column chromatography (methylene chloride:methanol=40:1,V/V) to give 3-bromo-8- 2,6-dichloro-3- N-methyl-N-N-(methylthioacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (105 mg).

NMR (CDCl₃, δ): 2.19 (3H, s), 2.43 (3H, s), 3.21 (2H, s), 3.28 (3H, s),3.59 (1H, dd, J=18Hz and 4Hz), 3.84 (1H, dd, J=18Hz and 5Hz), 5.50 (2H,s), 6.72 (1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.32 (1H, d, J=9Hz), 7.49(1H, d, J=9Hz), 7.61 (1H, br s), 7.78 (1H, d, J=7Hz)

Example 72

The following compounds were obtained according to similar manners tothose of Examples 36 to 39.

(1) 3-Bromo-8- 2,6-dichloro-3-N-(N-hexanoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!-pyridine

mp: 131°-132° C.

NMR (CDCl₃, δ) 0.89 (3H, t, J=6Hz), 1.19-1.40 (4H), 1.51-1.71, (2.20(2H, t, J=6Hz), 2.42 (3H, s), 3.25 (3H, s), 3.51 (1H, dd, J=18Hz and4Hz), 3.79 (1H, dd, J=18Hz and 5Hz), 5.49 (2H, s), 6.40 (1H, br s), 6.71(1H, d, J=7Hz), 6.86 (1H, t, J=7Hz), 7.30 (1H, d, J=9Hz), 7.48 (1H, d,J=9Hz), 7.78 (1H, d, J=7Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(3-phenylpropionyl)glycyl!amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 2.88-3.02 (4H), 3.23 (3H, s), 3.50 (1H,dd, J=18Hz and 4Hz), 3.79 (1H, dd, J=18Hz and 5Hz), 5.49 (2H, s), 6.45(1H, br s), 6.71 (1H, d, J=7Hz), 6.88 (1H, t, J=7Hz), 7.11-7.33 (5H),7.46 (1H, d, J=9Hz), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-methyl-N-phenylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.08 (3H, s), 3.22 (3H, s), 3.56 (1H, dd,J=18 Hz and 5 Hz), 3.82 (1H, dd, J=18 Hz and 5 Hz), 3.90 (2H, s), 5.50(2H, s), 6.69-6.91 (5H), 7.20-7.40 (3H), 7.48 (1H, d, J=9 Hz), 7.78 (1H,d, J=7 Hz)

Example 73

The following compounds were obtained according to a similar manner tothat of Example 60.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(metylthioacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.19 (3H, s), 2.53 (3H, s), 3.21 (2H, s), 3.27(3H, s), 3.66 (1H, d, J=18 Hz), 3.79 (1H, d, J=18 Hz), 5.72 (2H, s),7.49-7.73 (4H), 8.29 (1H, d, J=6 Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-N-(1-imidazolylacetyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.26 (3H, s), 3.63 (1H, d, J=18Hz), 3.83 (1H, d, J=18 Hz), 5.12 (2H, s), 5.71 (2H, s), 7.48-7.72 (6H),8.29 (1H, d, J=6 Hz), 9.00 (1H, s)

(3) 3-Bromo-8- 2,6-dichloro-3-N-(N-hexanoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.90 (3H, t, J=6 Hz), 1.21-1.42 (4H), 1.52-1.71(2H), 2.25 (2H, t, J=6 Hz), 2.56 (3H, s), 3.27 (3H, s), 3.62 (1H, d,J=16 Hz), 3.74 (1H, d, J=16 Hz), 5.70 (1H, d, J=10 Hz), 5.78 (1H, d,J=10 Hz), 7.53-7.76 (4H), 8.30 (1H, d, J=6 Hz)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(3-phenylpropionyl)glycyl!amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 2.83-3.00 (4H), 3.22 (3H, s),3.18 (2H, s), 5.71 (2H, s), 7.10-7.30 (5H), 7.55-7.76 (4H), 8.30 (1H, d,J=6 Hz)

(5) 3-Bromo-8- 2,6-dichloro-3- N-N-(N,N-diethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.40 (6H, t, J=7 Hz), 2.63 (3H, s), 3.25 (3H,s), 3.28-3.49 (4H), 3.60-4.09 (4H), 5.61 (1H, d, J=10 Hz), 5.70 (1H, d,J=10 Hz), 7.40-7.62 (4H), 8.11 (1H, d, J=6 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-ethyl-N-methylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.40 (3H, t, J=7 Hz), 2.45-2.90 (5H), 2.95 (3H,s), 3.21 (3H s), 3.61-4.01 (4H), 5.63 (3H, br s), 7.38-7.64 (4H), 8.08(1H, d, J=6 Hz)

(7) 3-Bromo-8- 3- N-N-(N-cyclopropylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.84-1.03 (4H), 2.59 (3H, s), 2.79 (1H, m),3.25 (3H, s), 3.58-3.71 (2H), 3.80-4.00 (3H), 5.73 (2H, s), 7.56-7.75(4H), 8.30 (1H, d, J=6 Hz)

(8) 3-Bromo-8- 3- N-N-(N-cyclohexylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.16-1.51 (5H), 1.68-2.20 (5H), 2.58 (3H, s),3.08 (1H, m), 3.26 (3H, s), 3.56-3.71 (2H), 3.80-3.92 (3H), 5.72 (2H,s), 7.48-7.74 (4H), 8.30 (1H, d, J=6 Hz)

(9) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(1-pyrrolidinylacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.97-2.29 (4H), 2.58 (3H, s), 3.09-3.30 (5H),3.53-3.91 (4H), 4.09 (2H, s), 5.71 (2H, s), 7.53-7.76 (4H), 8.30 (1H, d,J=6 Hz)

(10) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N-(piperidinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.42-2.09 (6H), 2.58 (3H, s), 2.98-3.19 (2H),3.28 (3H, s), 3.50-3.71 (4H), 3.80-4.04 (2H), 5.72 (2H, s), 7.55-7.76(4H), 8.30 (1H, d, J=6 Hz)

(11) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N-4-(4-pyridyl)-1-piperazinyl!acetyl!glycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine tetrahydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.28 (3H, s), 3.58-3.72 (5H),3.89 (1H, d, J=18 Hz), 4.02-4.25 (4H), 5.72 (2H, s), 7.30 (2H, d, J=7Hz), 7.55-7.76 (4H), 8.21 (2H, d, J=7 Hz), 8.30 (1H, d, J=6 Hz)

(12) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-isopropyl-N-methylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.40 (6H, d, J=6 Hz), 2.56 (3H, s), 2.85 (3H,s), 3.25 (3H, s), 3.59-3.71 (3H), 3.90 (1H, d, J=18 Hz), 4.01 (1H, m),5.72 (2H, s), 7.48-7.78 (4H), 8.30 (1H, d, J=6 Hz)

(13) 3-Bromo-8- 3- N-N-(N-cyclohexyl-N-methylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.43-1.90 (8H), 2.01-2.19 (2H), 2.56 (3H, s),3.26 (3H, s), 3.31-3.41 (4H), 3.62 (1H, d, J=18 Hz), 3.80-3.96 (3H),5.72 (2H, s), 7.50-7.72 (4H), 8.29 (1H, d, J=6 Hz)

(14) 3-Bromo-8- 3- N-N-(N-cycloheptylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.25-2.20 (12H), 2.59 (3H, s), 2.89 (3H, s),3.26 (3H, s), 3.31-3.41 (2H), 3.62 (1H, d, J=18 Hz), 3.90 (1H, d, J=18Hz), 4.09 (1H, m), 5.73 (2H, s), 7.56-7.75 (4H), 8.30 (1H, d, J=6 Hz)

(15) 3-Bromo-8- 3- N-N-(N-cyclopentylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.59-1.93 (6H), 2.00-2.23 (2H), 2.56 (3H, s),3.26 (3H, s), 3.49-3.67 (2H), 3.80-3.92 (3H), 5.72 (2H, s), 7.50-7.74(4H), 8.30 (1H, d, J=6 Hz)

(16) 3-Bromo-8- 3 N-N-(N-cyclooctylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.31-2.10 (14H), 2.63 (3H, s), 3.23 (3H, s),3.30 (1H, m), 3.71 (1H, d, J=18 Hz), 3.81 (2H, s), 3.90 (1H, d, J=18Hz), 5.65 (2H, s), 7.40-7.66 (4H), 8.09 (1H, d, J=6 Hz)

(17) 3-Bromo-8- 3- N-N-(N-cycloheptyl-N-methylglycyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.42-1.90 (10H), 2.05-2.30 (2H), 2.65 (3H, s),2.88 (3H, s), 3.24 (3H, s), 3.50-3.72 (2H), 3.80-4.10 (3H), 5.61 (1H, d,J=10 Hz), 5.71 (1H, d, J=10 Hz), 7.42-7.62 (4H), 8.10 (1H, d, J=6 Hz)

(18) 3-Bromo-8- 2,6-dichloro-3- N-N-(hexamethyleneiminoacetyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.42-2.20 (8H), 2.66 (3H, s), 3.22 (3H, s),3.30-3.82 (6H), 3.90-4.08 (2H), 5.56 (1H, d, J=10 Hz), 5.69 (1H, d, J=10Hz), 7.20-7.50 (3H), 7.59 (1H, d, J=9 Hz), 8.00 (1H, d, J=6 Hz)

(19) 8- 3- N- N-N-(1-Adamantyl)glycyl!glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.56-2.35 (15H), 2.65 (3H, s), 3.22 (3H, s),3.66-3.99 (4H), 5.60 (1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 7.31-7.54(3H), 7.62 (1H, d, J=9 Hz), 8.02 (1H, d, J=6 Hz)

(20) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N-N-(piperidino)glycyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine trihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.52-2.40 (6H), 2.68 (3H, s), 3.22 (3H, s),3.51-3.99 (6H), 4.59 (1H, d, J=11 Hz), 4.70 (1H, d, J=11 Hz), 5.67 (2H,s), 7.31-7.50 (2H), 7.55 (1H, d, J=9 Hz), 7.67 (1H, d, J=9 Hz), 8.06(1H, d, J=6 Hz)

(21) 3-Bromo-8- 2,6-dichloro-3- N- N-N-(2-furylmethyl)glycyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.62 (3H, s), 3.22 (3H, s), 3.70-3.99 (4H),4.30 (2H, s), 5.60 (1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 6.39 (1H,m), 6.69 (1H, d, J=3 Hz), 7.37-7.62 (5H), 8.08 (1H, d, J=6 Hz)

(22) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-methoxyphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.51 (3H, s), 3.28 (3H, s), 3.71 (2H, s), 3.76(3H, s), 5.70 (1H, d, J=10 Hz), 5.79 (1H, d, J=10 Hz), 6.56 (1H, dd, J=9Hz and 1 Hz), 6.81 (1H, dd, J=9 Hz and 1 Hz), 7.06 (1H, t, J=1 Hz), 7.12(1H, t, J=9 Hz), 7.50-7.78 (4H), 8.30 (1H, d, J=6 Hz)

(23) 3-Bromo-8- 3- N-N'-(3-chlorophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.29 (3H, s), 3.95 (1H, d, J=18Hz), 4.16 (1H, d, J=18 Hz), 5.77 (2H, s), 7.18 (1H, m), 7.31 (2H, d, J=5Hz), 7.50-7.72 (5H), 8.29 (1H, d, J=6 Hz)

(24) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-trifluoromethylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.30 (3H, s), 3.72 (2H, s), 5.69(1H, d, J=10 Hz), 5.79 (1H, d, J=10 Hz), 7.23 (1H, m), 7.39 (2H, d, J=5Hz), 7.50-7.73 (4H), 7.89 (1H, br s), 8.28 (1H, d, J=6 Hz)

(25) 8- 3- N-N'-(3-Acetylphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 2.60 (3H, s), 3.30 (3H, s), 3.72(2H, br s), 5.70 (1H, d, J=10 Hz), 5.80 (1H, d, J=10 Hz), 7.38 (1H, t,J=9 Hz), 7.49-7.72 (6H), 8.04 (1H, br s), 8.29 (1H, d, J=6 Hz)

(26) 3-Bromo-8- 3- N-N'-(3-cyanophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.29 (3H, s), 3.72 (2H, s), 5.69(1H, d, J=10 Hz), 5.79 (1H, d, J=10 Hz), 7.25-7.72 (7H), 7.97 (1H, brs), 8.28 (1H, d, J=7 Hz)

(27) 3-Bromo-8- 2,6-dichloro-3- N-N'-(o-tolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridinehydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.25 (3H, s), 2.49 (3H, s), 3.28 (3H, s), 3.73(2H, s), 5.68 (1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 6.95-7.20 (3H),7.40-7.71 (5H), 8.29 (1H, d, J=6 Hz)

(28) 3-Bromo-8- 3- N-N'-(3-fluorophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.29 (3H, s), 3.71 (2H, s), 5.67(1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 6.68 (1H, dt, J=8 Hz and 1 Hz),6.93 (1H, br d, J=8 Hz), 7.20 (1H, dt, J=8 Hz and 6 Hz), 7.32 (1H, dt,J=10 Hz and 1 Hz), 7.48-7.71 (4H), 8.24 (1H, d, J=6 Hz)

(29) 3-Bromo-8- 3- N-N'-(3-ethylphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.21 (3H, t, J=7 Hz), 2.52 (3H, s), 2.60 (2H,q, J=7 Hz), 3.28 (3H, s), 3.71 (2H, s), 5.65 (1H, d, J=10 Hz), 5.79 (1H,d, J=10 Hz), 6.87 (1H, m), 7.10-7.22 (3H), 7.52-7.71 (4H), 8.25 (1H, d,J=6 Hz)

(30) 8- 3-N-(N'-Benzoylureidoacetyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!-pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.62 (3H, s), 3.30 (3H, s), 3.75 (1H, d, J=18Hz), 3.95 (1H, d, J=18 Hz), 5.68 (2H, s), 7.38-7.66 (7H), 7.89 (2H, d,J=8 Hz), 8.09 (1H, d, J=6 Hz)

(31) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-nitrophenyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.63 (3H, s), 3.25 (3H, s), 3.92 (2H, s), 5.59(1H, d, J=10 Hz), 5.68 (1H, d, J=10 Hz), 7.29-7.58 (5H), 7.70 (1H, dd,J=7 Hz and 1 Hz), 7.79 (1H, d, J=7 Hz), 8.10 (1H, d, J=6 Hz), 8.19 (1H,br s)

(32) 3-Bromo-8- 2,6-dichloro-3- N-N'-(3-ethoxycarbonylphenyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.30 (3H, t, J=7 Hz), 2.62 (3H, s), 3.21 (3H,s), 3.99 (2H, s), 4.20 (2H, q, J=7 Hz), 5.58 (2H, s), 7.12-7.52 (6H),7.62-7.80 (2H), 8.01 (1H, d, J=6 Hz)

(33) 3-Bromo-8- 2,6-dichloro-3-N-(N'-ethoxycarbonylmethylureidoacetyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ): 2.57 (3H, s), 3.28 (3H, s), 3.68 (2H, s), 3.89 (2H, s),5.68 (1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 7.57-7.72 (4H), 8.29 (1H,d, J=6 Hz)

(34) 3-Bromo-8- 3- N- N'-3-(N,N-dimethylcarbamoyl)phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.56 (3H, s), 3.01 (3H, br s), 3.11 (3H, br s),3.30 (3H, s), 3.73 (2H, s), 5.68 (1H, d, J=10 Hz), 5.79 (1H, d, J=10Hz), 7.00 (1H, d, J=8 Hz), 7.30 (1H, t, J=8 Hz), 7.38-7.70 (6H), 8.24(1H, d, J=6 Hz)

(35) 3-Bromo-8- 2,6-dichloro-3- N- N-3-(N-methylcarbamoyl)propionyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.25-2.70 (5H), 2.80 (3H, s), 3.26 (3H, s),3.72 (1H, d, J=18 Hz), 3.89 (1H, d, J=18 Hz), 5.60 (1H, d, J=10 Hz),5.70 (1H, d, J=10 Hz), 7.38-7.61 (4H), 8.09 (1H, d, J=6 Hz)

(36) 3-Bromo-8- 2,6-dichloro-3- N-N-(N-methyl-N-phenylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.69 (3H, s), 3.21 (3H, s), 3.29 (3H, s), 3.64(1H, d, J=17 Hz), 3.81 (1H, d, J=17 Hz), 4.20 (1H, d, J=16 Hz), 4.32(1H, d, J=16 Hz), 5.62 (2H, s), 7.20-7.61 (9H), 8.06 (1H, d, J=6 Hz)

(37) 3-Bromo-8- 2,6-dichloro-3- N-N'-(2-thienyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ CD, δ): 2.63 (3H, s), 3.30 (3H, s), 3.81 (1H, d, J=17Hz), 3.93 (1H, d, J=17 Hz), 5.62 (1H, d, J=10 Hz), 5.72 (1H, d, J=10Hz), 7.09 (1H, dd, J=5 Hz and 4 Hz), 7.45-7.59 (5H), 7.69 (1H, d, J=4Hz), 8.09 (1H, dd, J=5 Hz and 1 Hz)

(38) 3-Bromo-8- 3- N-N'-(3-carboxyphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.29 (3H, s), 3.75 (2H, s), 5.68(1H, d, J=10 Hz), 5.79 (1H, d, J=10 Hz), 7.32 (1H, t, J=8 Hz), 7.49-7.72(6H), 8.05 (1H, br s), 8.28 (1H, d, J=6 Hz)

(39) 3-Chloro-8- 2,6-dichloro-3- N-N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.65 (3H, s), 2.96 (3H, s), 2.99 (3H, s), 3.22(3H, s), 3.62-4.04 (4H), 5.68 (2H, s), 7.38-7.68 (4H), 8.08 (1H, d, J=6Hz)

(40) 8- 2,6-Dichloro-3- N-N-(N,N-dimethylglycyl)glycyl!-N-methylamino!benzyloxy!-3-iodo-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 2.97 (6H, s), 3.27 (3H, s), 3.61(1H, d, J=18 Hz), 3.88 (1H, d, J=18 Hz), 4.01 (2H, s), 5.72 (2H, s),7.50-7.75 (4H), 8.28 (1H, d, J=6 Hz)

(41) 3-Bromo-8-2,6-dichloro-4-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 118°-121° C.

NMR (DMSO-d₆, δ): 2.03 (3H, br s), 2.38 (3H, s), 3.25 (3H, s), 5.51 (2H,s), 7.36 (1H, t, J=7 Hz), 7.50 (1H, d, J=7 Hz), 7.71 (2H, s), 8.20 (1H,d, J=7 Hz)

(42) 3-Chloro-8-2,6-dichloro-4-(N-acetyl-N-methylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 2.01 (3H, br s), 2.38 (3H, s), 3.25 (3H, s), 5.50 (2H,s), 7.35 (1H, t, J=7 Hz), 7.50 (1H, d, J=7 Hz), 7.72 (2H, s), 8.22 (1H,d, J=7 Hz)

Preparation 34

To a stirred two-phase solution of 3-nitrobenzoyl chloride (9.3 g) in amixture of diethyl ether (50 ml) and saturated sodium bicarbonatesolution (50 ml) was added 3-aminomethylpyridine (5.4 g) in anice-cooled bath. The mixture was stirred vigorously at ambienttemperature for 30 minutes. The reaction mixture was filtered, and theresulting solid was washed with water. The solid was further solidifiedwith diisopropyl alcohol-water to afford3-nitro-N-(3-pyridylmethyl)benzamide (5.91 g) as a pale yellow amorphoussolid.

p NMR (CDCl₃, δ): 4.70 (2H, d, J=5 Hz), 7.05 (1H, br s), 7.30 (1H, dd,J=7, 5 Hz), 7.68 (1H, t, J=9 Hz), 7.76 (1H, dt, J=8, 0.5 Hz), 8.22 (1H,d, J=8 Hz), 8.39 (1H, m), 8.54 (1H, dd, J=5, 0.5 Hz), 8.60 (1H, d, J=0.5Hz), 8.65 (1H, t, J=0.5 Hz)

Preparation 35

To a solution of N,N-bis(2-methoxyethyl)amine (2.40 g) and triethylamine(2.27 g) in dichloromethane (30 ml) was added 3-nitrobenzoyl chloride(2.78 g) in an ice-water bath. The mixture was stirred at ambienttemperature for 1 hour. The reaction mixture was washed with saturatedsodium bicarbonate solution, water and brine, dried over anhydrousmagnesium sulfate, and evaporated in vacuo. The residue was purifiedwith column chromatography eluting with dichloromethane-methanol to giveN,N-bis(2-methoxyethyl)-3-nitrobenzamide (4.12 g) as an oil.

p NMR (CDCl₃, δ): 3.22-3.88 (14H), 7.59 (1H, t, J=8 Hz), 7.80 (1H, dt,J=8, 1 Hz), 8.26 (1H, dt, J=8, 1 Hz), 8.39 (1H, t, J=1 Hz)

Preparation 36

The following compounds were obtained according to similar manners tothose of Preparations 34 or 35.

(1) 3-Nitro-N-(4-pyridyl)benzamide

mp: >250° C.

NMR (DMSO-d₆, δ): 7.80 (2H, d, J=6 Hz), 7.89 (1H, t, J=7 Hz), 8.38-8.58(4H), 8.80 (1 Hz t, J=1 Hz)

(2) 4-Methyl-1-(3-nitrobenzoyl)piperazine

mp: 97°-98° C.

NMR (CDCl₃, δ): 2.31-2.66 (7H), 3.38-3.97 (4H), 7.62 (1H, dt, J=8, 1Hz), 7.78 (1H, dt, J=1, 8 Hz), 8.25-8.34 (2H)

(3) 1-(3-Nitrobenzoyl)pyrrolidine

mp: 67° C.

NMR (CDCl₃, δ): 1.85-2.10 (4H, m), 3.45 (2H, t, J=6 Hz), 3.69 (2H, t,J=6 Hz), 7.61 (1H, t, J=8 Hz), 7.89 (1H, dif-ddd, J=8 Hz), 8.29 (1H,dif-ddd, J=8 Hz), 8.40 (1H, dif-dd)

Preparation 37

To a stirred solution of 3-nitro-N-(3-pyridylmethyl)benzamide (2.00 g)in tetrahydrofuran (40 ml) was added potassium tert-butoxide (917 mg) inone portion in an ice-cooled bath. The stirring was continued for 40minutes and then iodomethane (0.53 ml) was added thereto. The reactionmixture was stirred at 0° C. for one hour, then at ambient temperaturefor five hours. Saturated sodium bicarbonate solution was added theretoand the mixture was extracted with ethyl acetate. The organic layer waswashed with water and saturated sodium chloride solution. After driedover anhydrous magnesium sulfate and filtered, the solvent was removedin vacuo and the residue was purified by flash chromatography(methanol-chloroform 3%, V/V) to afford3-nitro-N-methyl-N-(3-pyridylmethyl)benzamide (1.8 g) as an yellow oil.

p NMR (CDCl₃, δ): 2.80-3.22 (3H, m), 4.40-4.93 (2H, m), 7.30-7.42 (1H,m), 7.44-7.90 (3H, m), 8.24-8.37 (2H, m), 8.40-8.75 (2H, m)

Preparation 38

Ethyl 4- N-(3-pyridylmethyl)acetamido!cinnamate was obtained by reactingethyl 4-acetamidocinnamate with 3-pyridylmethyl chloride according to asimilar manner to that of Preparation 37.

p NMR (CDCl₃, δ): 1.34 (3H, t, J=7 Hz), 1.92 (3H, s), 4.29 (2H, q, J=7Hz), 4.90 (2H, s), 6.41 (1H, d, J=15 Hz), 7.02 (2H, d, J=7 Hz), 7.24(1H, m), 7.51 (2H, d, J=7 Hz), 7.60-7.70 (2H), 8.38 (1H, br s), 8.51(1H, d, J=3 Hz)

Preparation 39

A mixture of N,N-bis(2-methoxyethyl)-3-nitrobenzamide (4.11 g) andpalladium on charcoal (411 mg) in ethyl acetate (41 ml) was hydrogenatedunder 1 atmospheric pressure of hydrogen for 1 hour at ambienttemperature. The catalyst was removed by filtration and washed withethyl acetate, and the volatiles were removed in vacuo. The residue waspurified with column chromatography eluting withdichloromethane-methanol to give3-amino-N,N-bis(2-methoxyethyl)benzamide (3.62 g) as an oil.

p NMR (CDCl₃, δ): 3.19-3.86 (16H), 6.62-6.79 (3H), 7.16 (1H, dt, J=8, 1Hz)

Preparation 40

The following compounds were obtained according to a similar manner tothat of Preparation 39.

(1) 3-Amino-N-methyl-N-(3-pyridylmethyl)benzamide

NMR (CDCl₃, δ): 2.87 (3H, br s), 3.75 (1H, or 2H, br s), 4.41-4.88 (2H,m), 6.55-6.84 (3H, m), 7.03-7.40 (2H, m), 7.42-7.84 (1H, m), 8.35-8.70(2H, m)

(2) 3-Amino-N-(4-pyridyl)benzamide

mp: 232°-234° C.

NMR (DMSO-d₆, δ): 5.39 (2H, br s), 6.79 (1H, br d, J=8 Hz), 7.02-7.11(2H), 7.19 (1H, t, J=8 Hz), 7.78 (2H, d, J=7 Hz), 8.46 (2H, d, J=7 Hz)

(3) 1-(3-Aminobenzoyl)-4-methylpiperazine

mp: 114°-116° C.

NMR (CDCl₃, δ): 2.28-2.60 (7H), 3.38-3.90 (6H), 6.68-6.79 (3H), 7.68(1H, t, J=8 Hz)

(4) 1-(3-Aminobenzoyl)pyrrolidine

NMR (CDCl₃, δ): 1.75-2.05 (4H, m), 3.40 (2H, t, J=6 Hz), 3.60 (2H, t,J=6 Hz, 3.72 (2H, br s), 6.71 (1H, dif-ddd, J=8 Hz), 6.78-6.89 (2H, m),7.10 (1H, t, J=8 Hz)

(5) 3-Amino-N-(3-pyridylmethyl)benzamide

NMR (CDCl₃ --CD₃ OD, δ): 4.60 (2H, s), 6.82 (1H, dt, J=8, 1 Hz),7.10-7.39 (4H), 7.79 (1H, dt, J=9, 1 Hz), 8.45 (1H, dd, J=5, 1 Hz), 8.52(1H, d, J=1 Hz)

Preparation 41

To a stirred solution of 3-amino-N,N-bis(2-methoxyethyl)benzamide (1.01g) in 1,4-dioxane (10 ml) was added 1N sodium hydroxide solution (5.2ml) and phenyl chloroformate (0.55 ml) successively in an ice-cooledbath. The bath was removed and the reaction mixture was stirredvigorously for 1 hour, during which time phenyl chloroformate (0.25 ml)was further added. The mixture was extracted with dichloromethane andthe organic layer was washed with water twice and brine, dried overanhydrous magnesium sulfate, and evaporated in vacuo. The residue wascrystallized from diisopropyl ether to give phenyl 3N,N-bis(2-methoxyethyl)carbamoyl!phenylcarbamate (1.30 g) as a colorlesspowder.

mp: 116°-118° C.

p NMR (CDCl₃, δ): 3.19-3.82 (14H), 7.10-7.57 (10H)

Preparation 42

The following compounds were obtained according to a similar manner tothat of Preparation 41.

(1) Phenyl 3- N-(4-pyridyl)carbamoyl!phenylcarbamate

mp: 204°-206° C.

NMR (DMSO-d₆, δ): 5.39 (1H, br s), 6.71-6.82 (2H), 7.02-7.33 (4H),7.40-7.81 (4H), 8.09 (1H,. br s), 8.41-8.51 (2H), 9.32 (1H, br s)

(2) Phenyl 3-(4-methyl-1-piperazinylcarbonyl)phenylcarbamate

mp 152°-154° C.

mp: 152°-154° C.

NMR (CDCl₃, δ): 2.27-2.56 (7H), 3.38-3.91 (4H), 7.10-7.60 (9H)

(3) Phenyl 3-(1-pyrrolidinylcarbonyl)phenylcarbamate

mp: 135°-140° C.

NMR (CDCl₃, δ): 1.74-2.00 (4H, m), 3.45 (2H, t, J=6 Hz), 3.63 (2H, t,J=6 Hz), 7.07-7.53 (9H, m), 7.72 (1H, br s)

(4) Phenyl 3- N-methyl-N-(3-pyridylmethyl)carbamoyl!-phenylcarbamate

NMR (CDCl₃, δ): 2.90-3.08 (3H), 4.58 (0.5H, br s), 4.76 (l.5H, br s),7.15-7.80 (13H), 8.58 (1H, d, J=5 Hz)

(5) Phenyl 3- N-(3-pyridylmethyl)carbamoyl!phenylcarbamate

mp: 185°-188° C.

NMR (CDCl₃ --CD₃ OD, δ): 4.62 (2H, s), 7.11-7.49 (7H), 7.56 (1H, dt,J=8, 1 Hz), 7.63-7.80 (2H), 7.84 (1H, t, J=1 Hz), 8.49 (1H, dd, J=5, 1Hz), 8.55 (1H, d, J=1 Hz)

(6) Phenyl 3-(N,N-dimethylamino)phenylcarbamate

mp: 226°-228° C.

NMR (CDCl₃, δ): 2.93 (6H, s), 6.49 (1H, d, J=7 Hz), 6.65 (1H, d, J=7Hz), 6.87 (1H, br s), 7.03 (1H, br s), 7.12-7.29 (4H), 7.32-7.42 (2H)

Preparation 43

(1) Ethyl 4-(phenoxycarbonylamino)cinnamate was obtained by reactingethyl 4-aminocinnamate with phenyl chloroformate according to a similarmanner to that of Preparation 42.

mp: 136°-138° C.

NMR (CDCl₃, δ): 1.33 (3H, t, J=7 Hz), 4.27 (2H, q, J=7 Hz), 6.39 (1H, d,J=15 Hz), 7.09 (1H, br s), 7.15-7.58 (9H), 7.65 (1H, d, J=15 Hz)

(2) A solution of ethyl 4-(phenoxycarbonylamino)cinnamate (500 mg)3-aminopyridine (154 mg) and triethylamine (325 mg) inN,N-dimethylformamide (5 ml) was stirred for 2 hours at 80° C. Water wasadded thereto, and the resulting precipitate was collected by filtrationto give ethyl 4- 3-(3-pyridyl)ureido!cinnamate (307 mg) as a colorlesspowder.

mp: 188°-189° C.

NMR (DMSO-d₆, δ): 1.26 (3H, t, J=7 Hz), 4.19 (2H, q, J=7 Hz), 6.50 (1H,d, J=15 Hz), 7.34 (1H, dd, J=9, 5 Hz), 7.46-7.72 (5H), 7.96 (1H, dt,J=9, 1 Hz), 8.21 (1H, dd, J=9, 1 Hz), 8.62 (1H, d, J=1 Hz), 8.98 (1H, brs), 9.10 (1H, m)

Preparation 44

To a mixture of ethyl 4-aminocinnamate (300 mg), triethylamine (167 mg)and dichloromethane (3 ml) was added a solution of propionyl chloride(182 mg) in dichloromethane (1 ml) in an ice-water bath, and the mixturewas stirred for 1 hour at the same temperature. To the reaction mixturewas added 4 drops of N,N-dimethylpropanediamine, and the mixture wasfurther stirred for 5 minutes. The reaction mixture was washed withwater, dried over magnesium sulfate, and evaporated in vacuo. Theresidue was crystallized from diisopropyl ether to give ethyl4-propionamidocinnamate (341 mg) as a colorless powder.

mp 138° C.

p NMR (CDCl₃, δ): 1.26 (3H, t, J=8 Hz), 1.34 (3H, t, J=8 Hz), 2.42 (2H,q, J=8 Hz), 4.26 (2H, q, J=8 Hz), 6.37 (1H, d, J=16 Hz), 7.21 (1H, brs), 7.49 (2H, d, J=8 Hz), 7.58 (2H, d, J=8 Hz), 7.68 (1H, d, J=16 Hz)

Preparation 45

To a solution of ethyl 4-aminocinnamate (2.00 g) and methoxyacetic acid(1.04 ml) in N,N-dimethylformamide (20 ml) were added1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (2.61 g) and1-hydroxybenzotriazole (2.12 g) at ambient temperature, and the mixturewas stirred for 1 hour at the same temperature. The reaction mixture waspoured into water, and extracted with dichloromethane. The organic layerwas washed with aqueous sodium bicarbonate solution and water, driedover magnesium sulfate, and evaporated in vacuo. The residue wascrystallized from diisopropyl ether to give ethyl4-(methoxyacetamido)cinnamate (2.34 g) as a pale yellow powder.

mp: 92.2° C.

p NMR (CDCl₃, δ): 1.34 (3H, t, J=7.5 Hz), 3.52 (3H, s), 4.03 (2H, s),4.26 (2H, q, J=7.5 Hz), 6.88 (1H, d, J=16 Hz), 7.50 (2H, d, J=9 Hz),7.62 (2H, d, J=9 Hz), 7.65 (1H, d, J=16 Hz), 8.34 (1H, br s)

Preparation 46

The following compounds were obtained according to similar manners tothose of Preparations 44 or 45.

(1) Ethyl 4-(4-bromobutyramido)cinnamate

mp: 119°-124° C.

NMR (CDCl₃, δ): 1.32 (3H, t, J=7.5 Hz), 2.21 (2H, quint, J=6 Hz), 2.59(2H, t, J=6 Hz), 3.66 (22H, t, J=6 Hz), 4.25 (2H, q, J=7.5 Hz), 6.34(1H, d, J=16 Hz), 7.47 (2H, d, J=8 Hz), 7.55 (2H, d, J=8 Hz), 7.61 (1H,d, J=16 Hz)

(2) Ethyl 4-(methoxyacetamido)cinnamate

mp: 87°-92° C.

NMR (CDCl₃, δ): 1.34 (3H, t, J=7.5 Hz), 3.53 (3H, s), 4.03 (2H, s), 4.26(2H, q, J=7.5 Hz), 6.37 (1H, d, J=16 Hz), 7.50 (2H, d, J=8 Hz), 7.63(2H, d, J=8 Hz), 7.65 (1H, d, J=16 Hz), 8.35 (1H, br s)

(3) Ethyl 4-(isonicotinoylamino)cinnamate

mp: 179°-188° C.

NMR (CDCl₃, δ): 1.34 (3H, t, J=7.5 Hz), 4.26 (2H, q, J=7.5 Hz), 6.40(1H, d, J=16 Hz), 7.52 (2H, d, J=9 Hz), 7.57 (1H, d, J=16 Hz), 7.65-7.78(4H), 8.19 (1H, br s), 8.31 (2H, dd, J=6, 0.5 Hz)

(4) Ethyl 4-(morpholinocarbonylamino)cinnamate

mp: 170°-173° C.

NMR (CDCl₃, δ): 1.33 (3H, t, J=7 Hz), 3.43-3.56 (4H), 3.70-3.81 (4H),4.28 (2H, q, J=7 Hz), 6.35 (1H, d, J=15 Hz), 6.49 (1H, br s), 7.40 (2H,d, J=9 Hz), 7.48 (2H, d, J=9 Hz), 7.63 (1H, d, J=15 Hz)

(5) Ethyl 4-(5-bromovaleramido)cinnamate

mp: 124.0° C.-134.7° C.

NMR (CDCl₃, δ): 1.33 (3H, t, J=7.5 Hz), 1.79-2.06 (4H, m), 2.42 (2H, t,J=6 Hz), 3.44 (2H, t, J=6 Hz), 4.26 (2H, q, J=7.5 Hz), 6.36 (1H, d, J=16Hz), 7.30 (1H, br s), 7.49 (2H, d, J=8 Hz), 7.57 (2H, d, J=8 Hz), 7.64(1H, d, J=16 Hz)

Preparation 47

To a solution of methyl 4-carboxycinnamate (160 mg) in methylenechloride was added methylamine hydrochloride (58 mg) and1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (140 mg) at ambienttemperature, and the mixture was stirred for 2 hours. To this suspensionwas added 1-hydroxybenzotriazole (137 mg) and dimethylformamide (2 ml),and the mixture was stirred for 14 hours at same temperature. Thereaction mixture was poured into water, and extracted withdichloromethane. The organic layer was washed with aqueous sodiumbicarbonate solution and water, dried over magnesium sulfate, andevaporated in vacuo. The residue was crystallized from diisopropyl etherto give methyl 4-(methylcarbamoyl)cinnamate (82 mg) as a colorlesspowder.

mp: 210.5° C.

NMR (DMSO-d₆, δ): 2.79 (3H, d, J=5 Hz), 3.74 (3H, s), 6.74 (1H, d, J=16Hz), 7.69 (1H, d, J=16 Hz), 7.80 (2H, d, J=8 Hz), 7.87 (2H, d, J=8 Hz),8.51 (1H, q-like)

Preparation 48

To a stirred suspension of methyl 4-carboxycinnamate (400 mg) in thionylchloride (1.4 ml) was added one drop or N,N-dimethylformamide. Themixture was refluxed for 20 minutes. The solvent was removed in vacuo.To the residue was added toluene (2 ml) and the mixture was evaporatedin vacuo twice. The residue was dissolved with dichloromethane (4 ml),and 4-aminopyridine (201 mg) and triethylamine (0.81 ml) were addedthereto in an ice-water-bath. After 10 minutes the mixture was stirredat ambient temperature. After 3 hours, to the reaction mixture was addedwater and the mixture was extracted with dichloromethane-methanol (5:1,V/V). The organic layer was washed with saturated sodium bicarbonatesolution, water and brine, and dried over anhydrous magnesium sulfate.The solvent was evaporated in vacuo. The residue was crystallized fromethyl acetate to give methyl 4- N-(4-pyridyl)carbamoyl!cinnamate (555mg) as a colorless powder.

mp: 209°-211° C.

p NMR (DMSO-d₆, δ): 3.76 (3H, s), 6.82 (1H, d, J=15 Hz), 7.69-7.83 (3H),7.92 (2H, d, J=9 Hz), 8.01 (2H, d, J=9 Hz), 8.50 (2H, d, J=7 Hz)

Preparation 49

The following compounds were obtained according to similar manners tothose of Preparations 47 or 48.

(1) Methyl 4-(N,N-dimethylcarbamoyl)cinnamate

mp: 130° C.

NMR (CDCl₃, δ): 3.00 (3H, s), 3.12 (3H, s), 3.83 (3H, s), 6.49 (1H, d,J=16 Hz), 7.45 (2H, d, J=8 Hz), 7.58 (2H, d, J=8 Hz), 7.70 (1H, d, J=16Hz)

(2) Methyl 4- N-(2-methoxyethyl)carbamoyl!cinnamate

mp: 122°-124° C.

NMR (CDCl₃, δ): 3.40 (3H, s), 3.53-3.72 (4H), 3.83 (3H, s), 6.45-6.60(3H), 7.58 (2H, d, J=8 Hz), 7.71 (1H, d, J=15 Hz), 7.80 (2H, d, J=8 Hz)

(3) Methyl 4- N,N-bis(2-methoxyethyl)carbamoyl!cinnamate

NMR (CDCl₃, δ): 3.21-3.86 (17H), 6.48 (1H, d, J=15 Hz), 7.44 (1H, d, J=9Hz), 7.57 (1H, d, J=9 Hz), 7.70 (1H, d, J=15 Hz)

Preparation 50

To a solution of ethyl 4-aminocinnamate (150 mg) in methylene chloridewere added methyl isocyanate (0.06 ml) under nitrogen atmosphere atambient temperature, and the mixture was stirred for 2 hours at the sametemperature. The reaction mixture was poured into the mixture of ethylacetate and water. The organic layer was washed with water twice, driedover magnesium sulfate, and concentrated in vacuo. The residue wascrystallized from diisopropyl ether to give ethyl4-(3-methylureido)cinnamate (136 mg).

mp: 166° C.

p NMR (DMSO-d₆, δ): 1.25 (3H, t, J=7.5 Hz), 2.64 (3H, d, J=5 Hz), 4.17(2H, q, J=7.5 Hz), 6.12 (1H, q, J=5 Hz), 6.43 (1H, d, J=16 Hz), 7.45(2H, d, J=8 Hz), 7.56 (1H, d, J=16 Hz), 7.59 (2H, d, J=8 Hz), 8.81 (1H,s)

Preparation 51

To a stirred solution of ethyl 4-(4-bromobutyramido)cinnamate (420 mg)in N,N-dimethylformamide (5 ml) was added potassium carbonate (552 mg)at ambient temperature and the resulting mixture was warmed at 50° C.for three hours. The reaction mixture was diluted with ethyl acetate andwashed with water and brine. The organic phase was dried over anhydrousmagnesium sulfate, and concentrated in vacuo. The residue was purifiedby flash column chromatography eluting with chloroform to afford ethyl4-(2-oxo-1-pyrrolidinyl)cinnamate (281 mg) as a pale yellow solid.

mp: 134° C.

p NMR (CDCl₃, δ): 1.34 (3H, t, J=7.7 Hz), 2.19 (2H, quint, J=7.7 Hz),2.63 (2H, t, J=7.7 Hz), 3.88 (2H, t, J=7.7 Hz), 4.26 (2H, q, J=7.7 Hz),6.38 (7H, d, J=16 Hz), 7.53 (2H, d, J=8 Hz), 7.64 (1H, d, J=16 Hz), 7.68(2H, d, J=8 Hz)

Preparation 52

Ethyl 4-(2-oxopiperidino)cinnamate was obtained according to a similarmanner to that of Preparation 51.

mp: 120.2° C.

p NMR (CDCl₃, δ): 1.34 (3H, t, J=7.5 Hz), 1.83-2.05 (4H, ad ), 2.56 (2H,dif-t), 3.65 (2H dif-d), 4.26 (2H, g, J=7.5 Hz), 6.40 (1H, d, J=16 Hz),7.29 (2H, d, J=8 Hz), 7.54 (2H, d, J=8 Hz), 7.65 (1H, d, J=16 Hz)

Preparation 53

A solution of ethyl 4-aminocinnamate (1 g) and2,5-dimethoxytetrahydrofuran (0.677 ml) in toluene (3 ml) and aceticacid (3 ml) was refluxed for 5 hours with removing methane. Aftercooling, the mixture was washed with water twice and saturated sodiumbicarbonate solution, dried over anhydrous magnesium sulfate. Thesolvent was evaporated in vacuo. The residue was purified with columnchromatography eluting with n-hexane-ethyl acetate to give ethyl4-(1-pyrrolyl)cinnamate (740 mg) as colorless crystals.

mp: 86°-87° C.

NMR (CDCl₃, δ): 1.37 (3H, t, J=7 Hz), 4.29 (2H, q, J=7 Hz), 6.32-6.49(2H), 7.12 (2H, t, J=1 Hz), 7.41 (2H, d, J=9 Hz), 7.60 (2H, d, J=9 Hz),7.69 (1H, d, J=16 Hz)

Preparation 54

Ethyl 4-(N-methyl-2-methoxyacetamido)cinnamate was obtained according toa similar manner to that of Preparation 37.

p NMR (CDCl₃, δ): 1.35 (3H, t, J=7.5 Hz), 3.29 (3H, s), 3.35 (3H, s),3.85 (2H, br s), 4.27 (2H, q, J=7.5 Hz), 6.46 (1H, d, J=16 Hz), 7.24(2H, d, J=8 Hz), 7.57 (2H, d, J=8 Hz), 7.67 (1H, d, J=16 Hz)

Preparation 55

To a solution of ethyl 4-propionamidocinnamate (160 mg) in ethanol (5ml) was added 1N aqueous sodium hydroxide solution (1.5 ml) at ambienttemperature. The mixture was stirred at same temperature for 14 hours,and then at 40° C. for 2 hours. 1N-hydrochloric acid (1.5 ml) was addedto the reaction mixture and evaporated in vacuo. The residue was dilutedwith 10% methanol-dichloromethane, washed with water, dried overmagnesium sulfate and evaporated in vacuo. The residue was crystallizedfrom diisopropyl ether to give 4-propionamidocinnamic acid (115 mg) as acolorless powder.

mp: 243° C.

p NMR (DMSO-d₆, δ): 1.08 (3H, t, J=8 Hz), 2.34 (2H, q, J=8 Hz), 6.39(1H, d, J=16 Hz), 7.51 (1H, d, J=16 Hz), 7.62 (4H, s-like), 10.07 (1H,s)

Preparation 56

The following compounds were obtained according to a similar manner tothat of Preparation 55.

(1) 4-(Methylcarbamoyl)cinnamic acid

mp: >250° C.

NMR (DMSO-d₆, δ): 2.78 (3H, d, J=5 Hz), 6.62 (1H, d, J=16 Hz), 7.61 (1H,d, J=16 Hz), 7.77 (2H, d, J=8 Hz), 7.85 (2H, d, J=8 Hz), 8.51 (1H,q-like)

(2) 4-(N,N-Dimethylcarbamoyl)cinnamic acid

mp: 82° C.

NMR (DMSO-d₆, δ): 2.93 (3H, s), 2.97 (3H, s), 6.59 (1H, d, J=16 Hz),7.43 (2H, d, J=8 Hz), 7.61 (1H, d, J=16 Hz), 7.75 (2H, d, J=8 Hz)

(3) 4-(3-Methylureido)cinnamic acid

mp: 234° C.

NMR (DMSO-d₆, δ): 2.64 (3H, d, J=5 Hz), 6.12 (1H, q, J=5 Hz), 6.33 (1H,d, J=16 Hz). 7.44 (2H, d, J=8 Hz), 7.51 (1H, d, J=16 Hz), 7.55 (2H, d,J=8 Hz), 8.78 (1H, s)

(4) 4- N-(2-Methoxyethyl)carbamoyl!cinnamic acid

mp: 207°-209° C.

NMR (DMSO-d₆, δ): 3.20-3.50 (7H), 6.63 (1H, d, J=15 Hz), 7.62 (1H, d,J=15 Hz), 7.79 (2H, d, J=8 Hz), 7.89 (2H, d, J=8 Hz), 8.61 (1H, br s)

(5) 4- N,N-Bis(2-methoxyethyl)carbamoyl!cinnamic acid

NMR (CDCl₃, δ): 3.21-3.86 (17H), 6.48 (1H, d, J=15 Hz), 7.44 (2H, d, J=9Hz), 7.57 (2H, d, J=9 Hz), 7.70 (1H, d, J=15 Hz)

(6) 4- N-(4-Pyridyl)carbamoylcinnamic acid

mp: >250° C.

NMR (DMSO-d₆, δ): 6.69 (1H, d, J=16 Hz), 7.52-8.08 (7H), 8.49 (2H, d,J=6 Hz)

(7) 4-(2-Oxo-1-pyrrolidinyl)cinnamic acid

mp: >250° C.

NMR (DMSO-d₆, δ): 2.06 (2H, quint, J=8 Hz), 3.86 (2H, t, J=8 Hz), 6.46(1H, d, J=16 Hz), 7.55 (1H, d, J=16 Hz), 7.65-7.76 (4H, m)

(8) 4-(Methoxyacetamido)cinnamic acid

mp: 201.5°-229° C.

NMR (CDCl₃, δ): 4.02 (2H, s), 6.43 (1H, d, J=16 Hz), 7.52 (1H, d, J=16Hz), 7.63 (2H, d, J=8 Hz), 7.74 (2H, d, J=8 Hz), 9.97 (1H, s)

(9) 4- N-(3-Pyridylmethyl)acetamido!cinnamic acid

mp: 184°-186° C.

NMR (DMSO-d₆, δ): 1.90 (3H, s), 4.91 (2H, s), 6.52 (1H, d, J=15 Hz),7.21-7.39 (3H), 7.50-7.79 (4H), 8.39 (1H, d, J=2 Hz), 8.43 (1H, dd, J=5,2 Hz)

(10) 4-(Isonicotinoylamino)cinnamic acid

mp: 283°-290° C.

NMR (DMSO-d₆, δ): 6.46 (1H, d, J=16.2 Hz), 7.53 (1H, d, J=16.2 Hz), 7.68(2H, d, J=9 Hz), 7.79-7.91 (4H), 8.80 (2H, dd, J=6, 0.5 Hz)

(11) 4- 3-(3-Pyridyl)ureido!cinnamic acid

mp: 219°-221° C.

NMR (DMSO-d₆, δ): 6.40 (1H, d, J=15 Hz), 7.37 (1H, dd, J=9, 5 Hz),7.47-7.70 (5H), 7.98 (1H, dt, J=9, 1 Hz), 8.21 (1H, br d, J=5 Hz), 8.62(1H, d, J=1 Hz), 9.03 (1H, s), 9.16 (1H, s)

(12) 4-(Morpholinocarbonylamino)cinnamic acid

mp: 219°-221° C.

NMR (DMSO-d₆, δ): 3.39-3.49 (4H), 3.58-3.68 (4H), 6.37 (1H, d, J=15 Hz),7.46-7.60 (5H), 8.76 (1H, br s)

(13) 4-(2-Oxopiperidino)cinnamic acid

mp: 235.7°-243.2° C.

NMR (DMSO-d₆, δ): 1.73-1.97 (4H, m), 2.39 (2H, dif-t), 3.61 (2H, dif-t),6.51 (1H, d, J=16 Hz), 7.34 (2H, d, J=8 Hz), 7.59 (1H, d, J=16 Hz), 7.70(2H, d, J=8 Hz)

(14) 4-(N-Methyl-2-methoxyacetamido)cinnamic acid

mp: 182.1° C.

NMR (DMSO-d₆, δ): 3.17 (3H, s), 3.20 (3H, s), 3.87 (2H, br s), 6.57 (1H,d, J=15 Hz), 7.39 (2H, d, J=9 Hz), 7.60 (1H, d, J=15 Hz), 7.74 (2H, d,J=9 Hz)

(15) 4-(1-Pyrrolyl)cinnamic acid

mp: 236°-240° C.

NMR (DMSO-d₆, δ): 6.30 (2H, t, J=1 Hz), 6.54 (1H, d, J=16 Hz), 7.48 (2H,t, J=1 Hz), 7.53-7.71 (3H), 7.80 (2H, d, J=9 Hz)

Preparation 57

To a solution of ethyl 4-aminocinnamate (150 mg) and triethylamine (94mg) in methylene chloride (3 ml) was added mesyl chloride (0.08 ml)under ice-cooling under nitrogen atmosphere, and the mixture was stirredat ambient temperature for 2 hours. The reaction mixture was poured intowater, and extracted with methylene chloride twice. The combined organiclayer was washed with water, dried over magnesium sulfate andconcentrated to give a residue including ethyl 4-mesylaminocinnamate andethyl 4-(N,N-dimesylamino)cinnamate. The residue was dissolved inethanol, and 1N aqueous sodium hydroxide solution (1.5 ml) was addedthereto at 40° C. The mixture was stirred at ambient temperature for 2days, and 1N hydrochloric acid (1.5 ml) was added thereto. The mixturewas concentrated in vacuo, and the residue was partitioned between 10%methanol-methylene chloride and water. The organic layer was washed withwater, dried over magnesium sulfate and concentrated in vacuo. Theresidue was purified by preparative thin-layer chromatography (methylenechloride-methanol, 10:1, V/V) to give 4-mesylaminocinnamic acid (49.3mg).

mp: 218° C.

p NMR (DMSO-d₆, δ): 3.05 (3H, s), 6.44 (1H, d, J=16 Hz), 7.21 (2H, d,J=8 Hz), 7.53 (1H, d, J=16 Hz), 7.66 (2H, d, J=8 Hz)

Preparation 58

4-(N,N-Dimethylcarbamoyl)benzaldehyde was obtained by reacting4-formylbenzoic acid with dimethylamine hydrochloride according to asimilar manner to that of Preparation 47.

mp:60°-67° C.

p NMR (CDCl₃, δ): 2.97 (3H, s), 3.15 (3H, s), 7.59 (2H, d, J=7.5 Hz),7.94 (2H, d, J=7.5 Hz), 10.3 (1H,

Preparation 59

A mixture of 2-acetylamino-5-formylpyridine (241 mg) and malonic acid(168 mg) in pyridine (0.12 ml) and ethanol (0.36 ml) was refluxed for 2hours. After cooling the mixture, the precipitate was collected byfiltration, and washed ethyl acetate to give(E)-3-(6-acetylamino-3-pyridyl)acrylic acid (248 mg) as a colorlesspowder.

mp: 291°-292° C.

p NMR (DMSO-d₆, δ): 2.10 (3H, s), 6.55 (1H, d, J=16 Hz), 7.58 (1H, d,J=16 Hz), 8.07-8.21 (2H), 8.59 (1H, br s)

Preparation 60

The following compounds were obtained according to a similar manner tothat of Preparation 59.

(1) (E)-3-(6-Ethoxycarbonyl-3-pyridyl)acrylic acid (from ethyl5-formyl-2-pyridinecarboxylate)

mp: 201°-202° C.

NMR (DMSO-d₆, δ): 1.33 (3H, t, J=7 Hz), 4.36 (2H, q, J=7 Hz), 6.80 (1H,d, J=16 Hz), 7.69 (1H, d, J=16 Hz), 8.07 (1H, d, J=9 Hz), 8.33 (1H, dd,J=9, 2 Hz), 9.00 (1H, d, J=2 Hz)

(2) 4-(N,N-Dimethylcarbamoyl)cinnamic acid

NMR (CDCl₃, δ): 2.99 (3H, s), 3.11 (3H, s), 6.49 (1H, d, J=15 Hz), 7.46(2H, d, J=8 Hz), 7.59 (2H, d, J=8 Hz), 7.76 (1H, d, J=15 Hz)

Preparation 61

To a suspension of sodium hydride (60% active, 124 mg) indimethylformamide (2 ml) at ambient temperature was added ethyl4-hydroxycinnamate (500 mg) under nitrogen, and the mixture was stirredfor 1 hour. 2-Bromoethyl acetate (522 mg) was added to the mixture atsame temperature, and the mixture was allowed to stand for 19 hours. Thereaction mixture was poured into water and extracted with ethyl acetate.The organic layer was washed with water and brine, dried over magnesiumsulfate and evaporated in vacuo. The residue was chromatographed onsilica gel eluting with chloroform to give ethyl4-(2-acetoxyethoxy)cinnamate (716 mg) as an oil.

p NMR (CDCl₃, δ): 1.33 (3H, t, J=7.5 Hz), 2.11 (3H, s), 4.19 (2H, t, J=6Hz), 4.25 (2H, q, J=7.5 Hz), 4.44 (2H, t, J=6 Hz), 6.31 (1H, d, J=16Hz), 6.94 (2H, d, J=8 Hz), 7.49 (2H, d, J=8 Hz), 7.64 (1H, d, J=16 Hz)

Preparation 62

4-(2-Hydroxyethoxy)cinnamic acid was obtained from ethyl4-(2-acetoxyethoxy)cinnamate according to a similar manner to that ofPreparation 55.

mp: 194° C.

p NMR (DMSO-d₆, δ): 3.64-3.79 (2H, br peak), 4.02 (2H, t, J=6 Hz), 4.90(1H, br peak), 6.37 (1H, d, J=16 Hz), 6.98 (2H, d, J=8 Hz), 7.54 (1H, d,J=16 Hz), 7.63 (2H, d, J=8 Hz)

Example 74

The following compounds were obtained according to similar manners tothose of Examples 53 or 69.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(thiomorpholinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 2.66-2.88 (8H), 3.01 (2H, s), 3.28 (3H,s), 3.55 (1H, dd, J=18, 5 Hz), 3.82 (1H, dd, J=18, 5 Hz), 5.50 (2H, s),6.71 (1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz), 7.32 (1H, d, J=9 Hz), 7.50(1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz), 7.90 (1H, br s)

(2) 3-Bromo-8- 2,6-dichloro-3- N-(N,N-dimethyl-β-alanyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.39-2.56 (11H), 2.78 (2H, t, J=6 Hz), 3.24 (3H, s),3.55 (1H, dd, J=17, 4 Hz), 3.82 (1H, dd, J=17, 5 Hz), 5.50 (2H, s), 6.71(1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz), 7.34 (1H, d, J=9 Hz), 7.49 (1H,d, J=9 Hz), 7.79 (1H, d, J=7 Hz), 8.49 (1H, br s)

Example 75

The following compounds were obtained according to similar manners tothose of Examples 36 to 39.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(2-pyrimidinylthio)acetyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 212°-212.5° C.

p NMR (CDCl₃, δ): 2.42 (3H, s), 3.21 (3H, s), 3.52 (1H, dd, J=18, 5 Hz),3.70-3.89 (3H), 5.49 (2H, s), 6.71 (1H, d, J=7 Hz), 6.87 (1H, t, J=7Hz), 7.07 (1H, t, J=5 Hz), 7.28 (1H, d, J=9 Hz), 7.47 (1H, d, J=9 Hz),7.77 (1H, d, J=7 Hz), 8.03 (1H, br s), 8.62 (2H, d, J=5 Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(phenoxyacetyl)glycyl!amino!benzyloxy!-2-methylimidazo 1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.28 (3H, s), 3.62 (1H, dd, J=17, 5 Hz),3.89 (1H, dd, J=17, 5 Hz), 4.50 (2H, s), 5.50 (2H, s), 6.71 (1H, d, J=7Hz), 6.80-7.09 (4H), 7.22-7.39 (3H), 7.46-7.60 (2H), 7.78 (1H, d, J=7Hz)

(3) 3-Bromo-8- 2,6-dichloro-3- N-(heptafluorobutanoyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.29 (3H, s), 3.62 (1H, dd, J=17, 4 Hz),3.87 (1H, dd, J=17, 5 Hz), 5.51 (2H, s), 6.71 (1H, d, J=7 Hz), 6.87 (1H,t, J=7 Hz), 7.32 (1H, d, J=9 Hz), 7.41-7.55 (2H), 7.78 (1H, d, J=7 Hz)

(4) 3-Bromo-8- 2,6-dichloro-3-N-(n-heptanoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.88 (3H, t, J=7 Hz), 1.16-1.40 (6H), 1.50-1.77 (2H),2.21 (2H, t, J=7 Hz), 2.42 (3H, s), 3.25 (3H, s), 3.52 (1H, dd, J=18, 4Hz), 3.80 (1H, dd, J=18, 5 Hz), 5.49 (2H, s), 6.41 (1H, br t, J=5 Hz),6.72 (1H, d, J=7 Hz), 6.85 (1H, t, J=7 Hz), 7.31 (1H, d, J=9 Hz), 7.48(1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz)

(5) 3-Bromo-8- 2,6-dichloro-3-N-methyl-N-(cinnamoylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.29 (3H, s), 3.69 (1H, dd, J=17, 5 Hz),3.92 (1H, dd, J=17, 5 Hz), 5.50 (2H, s), 6.49 (1H, d, J=15 Hz), 6.62(1H, br s), 6.72 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.30-7.64 (8H),7.78 (1H, d, J=7 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(trans-3-pentenoyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.72 (3H, d, J=5 Hz), 2.43 (3H, s), 2.95 (2H, d, J=5Hz), 3.25 (3H, s), 3.51 (1H, dd, J=18, 4 Hz), 3.79 (1H, dd, J=18, 5 Hz),5.43-5.79 (4H), 6.60 (1H, br s), 6.71 (1H, d, J=7 Hz), 6.87 (1H, t, J=7Hz), 7.30 (1H, d, J=9 Hz), 7.49 (1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz)

(7) 3-Bromo-8- 3- N-(3-butenoyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.02 (2H, d, J=7 Hz), 3.25 (3H, s), 3.52(1H, dd, J=18, 4 Hz), 3.79 (1H, dd, J=18, 5 Hz), 5.19-5.32 (2H), 5.49(2H, s), 6.94 (1H, m), 6.59 (1H, br s), 6.72 (1H, d, J=7 Hz), 6.87 (1H,t, J=7 Hz), 7.30 (1H, d, J=9 Hz), 7.48 (1H, d, J=9 Hz), 7.78 (1H, d, J=7Hz)

(8) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(4-phenylbutanoyl)glycyl!amino!benzyloxy!-2-methylimidazo 1,2-a!pyridine

NMR (CDCl₃, δ): 1.86-2.06 (2H), 2.22 (2H, t, J=8 Hz), 2.42 (3H, s), 2.63(2H, t, J=8 Hz), 3.25 (3H, s), 3.51 (1H, dd, J=17, 5 Hz), 3.79 (1H, dd,J=17, 5 Hz), 5.49 (2H, s), 6.39 (1H, br s), 6.71 (1H, d, J=7 Hz), 6.86(1H, t, J=7 Hz), 7.11-7.34 (6H), 7.48 (1H, d, J=9 Hz), 7.78 (1H, d, J=7Hz)

(9) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(methylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 3.03 (3H, d, J=5 Hz), 3.28 (3H, s), 3.66(1H, dd, J=4, 18 Hz), 3.92 (1H, dd, J=4, 18 Hz), 5.46 (1H, d, J=10 Hz),5.53 (1H, d, J=10 Hz), 6.16 (1H, q-like), 6.53 (1H, d, J=16 Hz),6.62-6.78 (2H, m), 6.85 (1H, t, J=7.5 Hz), 7.33 (1H, d, J=8 Hz),7.45-7.68 (4H, m), 7.70-7.82 (3H, m)

(10) 3-Bromo-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 2.99 (3H, br s), 3.10 (3H, br s), 3.29(3H, s), 3.69 (1H, dd, J=17, 4 Hz), 3.91 (1H, dd, J=17, 5 Hz), 5.47 (1H,d, J=10 Hz), 5.52 (1H, d, J=10 Hz), 6.50 (1H, d, J=15 Hz), 6.65 (1H, brt, J=4 Hz), 6.71 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.29-7.62 (7H),7.78 (1H, d, J=7 Hz)

(11) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-methoxyethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.29 (3H, s), 3.40 (3H, s), 3.52-3.77(5H), 3.91 (1H, dd, J=17, 5 Hz), 5.50 (2H, s), 6.48-6.61 (2H), 6.63-6.79(2H), 6.88 (1H, t, J=7 Hz), 7.33 (1H, d, J=9 Hz), 7.46-7.65 (4H),7.72-7.83 (3H)

(12) 8- 3- N- 4-N,N-Bis(2-methoxyethyl)carbamoyl!-cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!-pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.21-3.82 (15H), 3.92 (1H, dd, J=17, 5Hz), 5.48 (1H, d, J=10 Hz), 5.56 (1H, d, J=10 Hz), 6.50 (1H, d, J=15Hz), 6.65 (1H br t, J=4 Hz), 6.73 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz),7.30-7.62 (7H), 7.78 (1H, d, J=7 Hz)

(13) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(4-pyridylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.25 (3H, s), 3.65 (1H, dd, J=17, 4 Hz),3.90 (1H, dd, J=17, 5 Hz), 5.42 (1H, d, J=10 Hz), 5.51 (1H, d, J=10 Hz),6.51 (1H, d, J=15 Hz), 6.69-6.80 (2H), 6.87 (1H, t, J=7 Hz), 7.30 (1H,d, J=9 Hz), 7.41-7.69 (6H), 7.78 (1H, d, J=7 Hz), 7.87 (2H, d, J=8 Hz),8.43-8.59 (3H)

(14) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxo-1-pyrrolidinyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.15 (1H, quint, J=7.5 Hz), 2.41 (3H, s), 2.63 (2H, t,J=7.5 Hz), 3.26 (3H, s), 3.65 (1H, dd, J=4, 18 Hz), 3.80-3.99 (3H, m),5.43-5.57 (2H, m), 6.43 (1H, d, J=16 Hz), 6.60 (1H, t-like), 6.73 (1H,d, J=8 Hz), 6.85 (1H, t, J=8 Hz), 7.32 (1H, d, J=8 Hz), 7.45-7.61 (4H,m), 7.67 (2H, d, J=8 Hz), 7.78 (1H, d, J=6 Hz)

(15) 3-Bromo-8- 2,6-dichloro-3- N-4-(methoxyacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.50 (3H, s), 3.65 (1H, dd,J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 4.01 (2H, s), 5.42-5.57 (2H, m),6.40 (1H, d, J=16 Hz), 6.59 (1H, t-like), 6.72 (1H, d, J=7.5 Hz), 6.85(1H, t, J=7.5 Hz), 7.32 (1H, d, J=8 Hz), 7.43-7.53 (3H, m), 7.55-7.65(3H, m), 7.77 (1H, d, J=6 Hz), 8.30 (1H, s)

(16) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(propionamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.24 (3H, t, J=7.5 Hz), 2.39 (2H, q, J=7.5 Hz), 2.43(3H, s), 3.26 (3H, s), 3.66 (1H, dd, J=16, 5 Hz), 3.88 (1H, dd, J=16, 6Hz), 5.45 (1H, d, J=9 Hz), 5.50 (1H, d, J=9 Hz), 6.39 (1H, d, J=15 Hz),6.60 (1H, br t, J=5 Hz), 6.73 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz),7.32 (1H, d, J=9 Hz), 7.40-7.60 (6H, m), 7.76 (1H, d, J=7 Hz)

(17) 8-(3- N-4-(Acetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.18 (3H, s), 2.44 (3H, s), 3.27 (3H, s), 3.66 (1H, dd,J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 5.41-5.55 (2H, m), 6.40 (1H, d,J=16 Hz), 6.59 (1H, t-like), 6.73 (1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz),7.33 (1H, d, J=8 Hz), 7.39-7.61 (7H, m), 7.78 (1H, d, J=6 Hz)

(18) 3-Bromo-8- 2,6-dichloro-3- N-4-(N-methylacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo(1,2-a!pyridine

NMR (CDCl₃, δ): 1.91 (3H, br s), 2.43 (3H, s),3.29 (6H, s), 3.68 (1H,dd, J=17, 4 Hz), 3.92 (1H, dd, J=17, 5 Hz), 5.47 (1H, d, J=10 Hz), 5.53(1H, d, J=10 Hz), 6.49 (1H, d, J=15 Hz), 6.65 (1H, br t, J=4 Hz), 6.72(1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.15-7.39 (3H), 7.48-7.62 (4H),7.79 (1H, d, J=7 Hz)

(19) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-N-(3-pyridylmethyl)acetamido!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.91 (3H, s), 2.42 (3H, s), 3.29 (3H, s), 3.67 (1H, dd,J=17, 4 Hz), 3.91 (1H, dd, J=17, 5 Hz), 4.90 (2H, s), 5.48 (1H, d, J=10Hz), 5.53 (1H, d, J=10 Hz), 6.46 (1H, d, J=15 Hz), 6.67 (1H, br t, J=4Hz), 6.72 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.01 (2H, d, J=8 Hz),7.19-7.68 (7H), 7.79 (1H, d, J=7 Hz), 7.39 (1H, d, J=1 Hz), 8.51 (1H,dd, J=5, 1 Hz)

(20) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(isonicotinoylamino)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 3.29 (3H, s), 3.69 (1H, dd, J=17 Hz), 3.92(1H, d, J=17 Hz), 5.45-5.58 (2H), 6.47 (1H, d, J=15 Hz), 6.65 (1H, brs), 6.78 (1H, d, J=7 Hz), 6.90 (1H, t, J=7 Hz), 7.31-7.83 (10H), 8.71(1H, s), 8.82 (2H, d; J=7 Hz)

(21) 8- 3-N-(4-Aminocinnamoylglycyl)-N-methylamino!-2,6-dichlorbenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.66 (1H, dd, J=18, 4 Hz),3.66 (2H, br s), 5.45 (1H, d, J=9 Hz), 5.51 (1H, d, J=9 Hz), 6.26 (1H,d, J=16 Hz), 6.50 (1H, br t, J=5 Hz), 6.63 (2H, d, J=9 Hz), 6.72 (1H, d,J=8 Hz), 6.87 (1H, t, J=8 Hz), 7.31 (2H, d, J=9 Hz), 7.46 (1H, d, J=5Hz), 7.47 (1H, d, J=16 Hz), 7.51 (1H, d, J=5 Hz), 7.77 (1H, d, J=8 Hz)

(22) 3-Bromo-8- 2,6-dichloro-3- N-4-(methanesulfonamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.03 (3H, s), 3.27 (3H, s), 3.65 (1H, dd,J=4, 7 Hz), 3.91 (8H, dd, J=4, 17 Hz), 5.42-5.58 (2H, m), 6.40 (1H, d,J=16 Hz) 6.55-6.77 (3H, m), 6.86 (1H, dd, J=8, 6 Hz),7.13-7.30 (2H, m),7.33 (1H, d, J=8 Hz), 7.42-7.59 (4H, m), 7.78 (1H, d, J=6 Hz)

(23) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(3-methylureido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 2.80 (3H, d, J=5 Hz), 3.23 (3H, s), 3.65(1H, dd, J=4, 18 Hz), 3.88 (1H, dd, J=4, 18 Hz), 5.05-5.18 (1H, m),5.39-5.53 (2H, m) 6.34 (1H, d, J=16 Hz), 6.63-6.77 (2H, m), 6.88 (1H, t,J=8 Hz), 7.23-7.57 (8H, m), 7.77 (1H, d, J=8 Hz)

(24) 3-Bromo-8- 2,6-dichloro-3- N-4-(methoxycarbonyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.28 (3H, s), 3.69 (1H, dd, J=17, 4 Hz),3.91 (1H, dd, J=17, 5 Hz), 3.93 (3H, s), 5.46 (2H, d, J=9 Hz), 5.51(1H,, d, J=9 Hz), 6.56 (1H, d, J=m6 Hz), 6.70 (1H, d), 6.73 (1H, d, J=8Hz), 6.86 (1H, t, J=8 Hz), 7.34 (1H, d, J=9 Hz), 7.50 (1H, d, J=9 Hz),7.50 (1H, d, J=9 Hz), 7.56 (2H, d, J=9 Hz), 7.61 (1H, d, J=16 Hz), 7.77(1H, d, J=8 Hz), 8.02 (2H, d, J=9 Hz)

(25) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-3-(3-pyridyl)ureido!cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃ --CD₃ OD, δ): 2.41 (3H, s), 3.25 (3H, s), 3.63 (1H, d, J=18Hz), 3.93 (1H, d, J=18 Hz), 5.50 (2H, s), 6.41 (1H, d, J=15 Hz), 6.77(1H, d, J=7 Hz), 6.90 (1H, t, J=7 Hz), 7.22-7.59 (8H), 7.80 (1H, d, J=7Hz), 8.14-8.32 (3H)

(26) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(morpholinocarbonylamino)cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.26 (3H, s), 3.43-3.56 (4H), 3.59-3.80(5H), 3.91 (1H, dd, J=17, 5 Hz), 5.50 (2H, s), 6.38 (1H, d, J=15 Hz),6.51-6.62 (2H), 6.72 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.24-7.59(7H), 7.78 (1H, d, J=7 Hz)

(27) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxo-piperidino)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.86-2.03 (4H, m), 2.44 (3H, s), 2.57 (3H, dif-t), 3.28(3H, s), 3.57-3.75 (3H, m), 3.91 (1H, dd, J=4, 18 Hz), 5.43-5.56 (2H,m), 6.43 (1H, d, J=16 Hz), 6.61 (1H, t-like), 6.71 (1H, d, J=7 Hz), 6.85(1H, t, J=7 Hz), 7.21-7.38 (3H, m),.7.44-7.63 (4H, m), 7.78 (1H, d, J=6Hz)

(28) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(N-methyl-2-methoxyacetamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.28 (3H, s), 3.30 (3H, s), 3.36 (3H, s),3.68 (1H, dd, J=18, 4 Hz), 3.83 (2H, br s), 3.91 (1H, dd, J=18, 5 Hz),5.48 (1H, d, J=9 Hz), 5.52 (1H, d, J=9 Hz), 6.48 (1H, d, J=15 Hz), 6.66(1H, br t, J=4 Hz), 6.73 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.20(2H, d, J=9 Hz), 7.34 (1H, d, J=7 Hz), 7.50 (1H, d, J=7 Hz), 7.35 (2H,d, J=9 Hz), 7.59 (1H, d, J=15 Hz), 7.78 (1H, d, J=7 Hz)

(29) 3-Bromo-8-(2,6-dichloro-3- N-methyl-N-4-(1-pyrrolyl)cinnamoylglycyl!amino!benzyloxy!-2-methyliimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.29 (3H, s), 3.69 (1H, dd, J=18, 4 Hz),3.92 (1H, dd, J=18, 5 Hz), 5.50 (2H, s), 6.38 (2H, t, J=1 Hz), 6.47 (1H,d, J=16 Hz), 6.65 (1H, br t, J=4 Hz), 6.72 (1H, d, J=7 Hz), 6.88 (1H, t,J=7 Hz), 7.12 (2H, t, J=1 Hz), 7.30-7.64 (7H), 7.78 (1H, d, J=7 Hz)

(30) 3-Chloro-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.00 (3H, br s), 3.12 (3H, br s), 3.29(3H, s), 3.69 (1H, dd, J=17, 4 Hz), 3.92 (1H, dd, J=17, 5 Hz), 5.47 (1H,d, J=10 Hz), 5.53 (1H, d, J=10 Hz), 6.50 (1H, d, J=16 Hz), 6.61-6.78(2H), 6.88 (1H, t, J=7 Hz), 7.30-7.64 (7H), 7.73 (1H, d, J=7 Hz)

(31) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(methylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (DMSO-d₆, δ): 2.30 (3H, s), 2.79 (3H, d, J=5 Hz), 3.17 (3H, s), 3.53(1H, dd, J=4, 18 Hz), 3.81 (1H, dd, J=4, 18 Hz), 5.48 (2H, s), 6.86 (1H,d, J=16 Hz), 6.93-7.05 (2H, m), 7.42 (1H, d, J=16 Hz), 7.58-7.70 (2H,m), 7.75-7.90 (4H, m), 7.90-8.00 (1H, m), 8.35 (1H, t-like), 8.50 (1H,q-like)

(32) 3-Chloro-8- 2,6-dichloro-3- N-4-(2-methoxyethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.28 (3H, s), 3.40 (3H, s), 3.54-3.60(2H), 3.63-3.73 (3H), 3.91 (1H, dd, J=18, 5 Hz), 5.49 (1H, d, J=10 Hz),5.52 (1H, d, J=10 Hz), 6.50-6.60 (2H), 6.68-6.74 (2H), 6.87 (1H, t,J=7.5 Hz), 7.34 (1H, d, J=8 Hz), 7.50 (1H, d, J=8 Hz), 7.52-7.63 (3H),7.72 (1H, d, J=7.5 Hz), 7.79 (2H, d, J=8 Hz)

(33) 3-Chloro-8- 2,6-dichloro-3- N-4-(methoxycarbonyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.29 (3H, s), 3.68 (1H, dd, J=4, 18 Hz),3.85-3.96 (4H, m), 5.49 (1H, d, J=10 Hz), 5.63 (1H, d, J=10 Hz), 6.57(1H, d, J=16 Hz), 6.66-6.74 (2H, m), 6.86 (1H, t, J=7.7 Hz), 7.34 (1H,d, J=8 Hz), 7.50 (1H, d, J=8 Hz), 7.53-7.64 (3H, m), 7.73 (1H, d, J=6Hz), 7.99-8.06 (2H, m)

(34) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxo-1-pyrrolidinyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.19 (2H, quint, J=8 Hz), 2.44 (3H, s), 2.63 (3H, t, J=8Hz), 3.29 (3H, s), 3.66 (1H, dd, J=4, 17.5 Hz), 3.81-3.99 (3H, m),5.43-5.58 (2H, m), 6.42 (1H, d, J=16 Hz), 6.60 (1H, t-like), 6.70 (1H,d, J=7.5 Hz), 6.86 (1H, t, J=7.5 Hz), 7.33 (1H, d, J=8 Hz), 7.45-7.60(4H, m), 7.60-7.76 (3H, m)

(35) 8- 3- N-4-(Acetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.18 (3H, s), 2.42 (3H, s), 3.26 (3H, s), 3.65 (1H, dd,J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 5.41-5.56 (2H, m), 6.39 (16H,d), 6.59 (1H, t-like), 6.70 (7.5H, d), 6.85 (7.5H, t), 7.31 (8H, d),7.39-7.59 (7H, m), 7.72 (6H,

(36) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(3-methylureido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 2.78 (3H, d, J=4 Hz), 3.21 (3H, s), 3.77(1H, dd, J=18, 4 Hz), 3.87 (1H, dd, J=18, 5 Hz), 5.35 (1H, br d, J=4Hz), 5.41 (1H, d, J=10 Hz), 5.49 (1H, d, J=10 Hz), 6.33 (1H, d, J=16Hz), 6.71 (1H, d, J=7.5 Hz), 6.79 (1H, br t, J=4 Hz), 6.89 (1H, t, J=7.5Hz), 7.26-7.37 (5H), 7.40 (1H, d, J=8 Hz), 7.49 (1H, d, J=16 Hz), 7.67(1H, br s), 7.74 (1H, d, J=7.5 Hz)

(37) 3-Chloro-8- 2,6-dichloro-3- N-4-(methoxyacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.29 (3H, s), 3.51 (3H, s), 3.68 (1H, dd,J=18, 4 Hz), 3.91 (1H, dd, J=18, 5 Hz), 4.02 (2H, s), 5.48 (1H, d, J=10Hz), 5.52 (1H, d, J=10 Hz), 6.41 (1H, d, J=15 Hz), 6.60 (1H, br s), 6.71(1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz), 7.32 (1H, d, J=8 Hz), 7.46-7.64(6H), 7.72 (1H, d, J=7 Hz), 8.32 (1H, br s)

(38) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(propionamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.25 (3H, t, J=7.5 Hz), 3.34-3.45 (5H, m), 3.26 (3H, s),3.66 (1H, dd, J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 5.43-5.55 (2H, m),6.40 (1H, d, J=16 Hz), 6.69 (1H, t-like), 6.71 (1H, d, J=7.5 Hz),7.30-7.36 (2H, m), 7.43-7.57 (5H, m), 7.72 (1H, d, J=6 Hz)

(39) 8- 3-N-(4-Aminocinnamoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.65 (1H, dd, J=4, 18 Hz),3.83-3.95 (3H, m), 5.42-5.54 (2H, m), 6.25 (1H, d, J=16 Hz), 6.50 (1H,t-like), 6.63 (2H, d, J=8 Hz), 6.70 (1H, d, J=7.7 Hz), 6.85 (1H, t,J=7.7 Hz), 7.29-7.36 (3H, m), 7.43-7.52 (2H, m), 7.71 (1H, d, J=6 Hz)

(40) 3-Bromo-8- 2,6-dichloro-3- N-(E)-3-(6-ethoxycarbonyl-3-pyridyl)acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.47 (3H, t, J=7 Hz), 2.44 (3H, s), 3.29 (3H, s), 3.70(1H, dd, J=18, 4 Hz), 3.92 (1H, dd, J=18, 5 Hz), 4.50 (2H, q, J=7 Hz),5.51 (2H, s), 6.64 (1H, d, J=16 Hz), 6.70-6.80 (2H), 6.88 (1H, t, J=7Hz), 7.35 (1H, d, J=9 Hz), 7.51 (1H, d, J=9 Hz), 7.62 (1H, d, J=16 Hz),7.78 (1H, d, J=7 Hz), 7.94 (1H, dd, J=8, 1 Hz), 8.16 (1H, d, J=8 Hz),8.88 (1H, d, J=1 Hz)

(41) 8- 3- N-(E)-3-(6-Acetylamino-3-pyridyl)acryloylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.21 (3H, s), 2.44 (3H, s), 3.29 (3H, s), 3.69 (1H, dd,J=18, 4 Hz), 3.92 (1H, dd, J=18, 5 Hz), 5.50 (2H, s), 6.48 (1H, d, J=16Hz), 6.65-6.78 (2H), 3d (1H, t, J=7 Hz), 7.35 (1H, d, J=9 Hz), 7.50 (1H,d, J=9 Hz), 7.55 (3H, d, J=16 Hz), 7.78 (1H, d, J=7 Hz), 7.85 (3H, dd,J=9, 1 Hz), 8.10 (1H, br s), 8.22 (1H, d, J=9 Hz), 8.37 (1H, d, J=1 Hz)

(42) 3-Bromo-8- 2,6-dichloro-3- N-4-2-hydroxyethoxy)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.00 (3H, t, J=5 Hz), 2.43 (3H, s), 3.27 (3H, s), 3.65(1H, dd, J=4, 18 Hz), 3.83-4.04 (3H, m), 4.11 (2H, t), 5.47 (1H, d, J=10Hz), 5.53 (1H, d, J=10 Hz), 6.35 (1H, d, J=16 Hz), 6.56 (1H, t-like),6.71 (1H, d, J=7 Hz), 6.79-6.97 (3H, m), 7.33 (1H, d, J=8 Hz), 7.40-7.61(4H, m), 7.77 (1H, d, J=6 Hz)

(43) 3-Bromo-8- 2,6-dichloro-3- N-3,4-dimethoxycinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.29 (3H, s), 3.67 (1H, dd, J=4, 18 Hz),3.84-4.00 (7H, m), 5.43-5.58 (2H, m), 6.37 (1H, d, J=16 Hz), 6.59 (1H,t-like), 6.73 (5H, d, J=7.5 Hz), 6.81-6.92 (2H, m), 7.00-7.15 (2H, J9),7.34 (1H, d, J=8 Hz), 7.49 (1 Hz d, J=1 Hz), 7.54 (1H, d, J=8 Hz), 7.78(1H, d, J=6 Hz)

(44) 3-Bromo 2,6-dichloro-3- N-methyl-N-3,4-(methylenedioxy)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.28 (3H, s), 3.65 (1H, dd, J=4, 18 Hz),3.92 (1H, dd, J=4, 18 Hz), 5.42-5.57 (2H, m), 6.00 (2H, s), 6.30 (1H, d,J=16 Hz), 6.57 (1H, t-like), 6.69-6.92 (3H, m), 6.92-7.04 (2H, m), 7.33(2H, d, J=8 Hz), 7.42-7.55 (2H, m), 7.78 (6H, d, J=6 Hz)

(45) 3-Bromo-8- 2,6-dichloro-3- N-(1-indolylcarbonyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, t ), 3.31 (3H, s), 3.79 (1H, dd, J=17, 4 Hz),4.01 (1H, dd, J=17, 5 Hz), 5.51 (2H, s), 6.62 (1H, d, J=3 Hz), 6.68-6.78(2H), 6.88 (1H, t, J=7 Hz), 7.19-7.62 (6H), 7.78 (1H, d, J=7 Hz), 8.11(1H, d, J=8 Hz)

(46) 3-Bromo-8 -m2,6-dichloro-3- N-methyl-N-(morpholinocarbonyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.24 (3H, s), 3.30-3.42 (4H), 3.51 (1H,dd, J=17, 4 Hz), 3.62-3.88 (5H), 5.40-5.60 (3H), 6.71 (1H, d, J=7 Hz),6.86 (1H, t, J=7 Hz), 7.32 (2H, d, J=9 Hz), 7.48 (1H, d, J=9 Hz), 7.78(1H, d, J=7 Hz)

Example 76

A mixture of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine (120 mg), phenyl 3-N,N-bis(2-methoxyethyl)carbamoyl!phenylcarbamate (110 mg) andtriethylamine (57 mg) in N,N-dimethylformamide (1.2 ml) was stirred at80° C. for 1.5 hours. The mixture was extracted with dichloromethane andwashed with water. After dried over magnesium sulfate, the solvent wasremoved in vacuo. The residue was purified by preparative thin layerchromatography eluting with dichloromethane-methanol to give 8- 3- N-N'- 3-N,N-bis(2-methoxyethyl)carbamoyl!phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine (162 mg) as amorphous.

p NMR (CDCl₃, δ): 2.41 (3H, s), 3.13-3.90 (19H), 5.47 (2H, s), 5.98 (1H,br t, J=4 Hz), 6.71 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.00 (1H, brd, J=7 Hz), 7.14-7.49 (5H), 7.72 (1H, d, J=7 Hz), 7.89 (1H, br s)

Example 77

The following compounds were obtained according to similar manners tothose of Examples 42, 43, 65 or 76.

(1) 3-Bromo-8- 2,6-dichloro-3- N-N'-(5-isoquinolyl)ureidoacetyl-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.19 (3H, s), 3.71 (1H, dd, J=17, 5 Hz),3.91 (1H, dd, J=17, 5 Hz), 5.46 (2H, s), 6.29 (1H, br t, J=5 Hz), 6.71(1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz), 7.31 (1H, d, J=9 Hz), 7.41 (1H,d, J=9 Hz), 7.54 (1H, t, J=7 Hz), 7.66-7.81 (4H), 7.99 (1H, d, J=7 Hz),8.41 (1H, d, J=5 Hz), 9.21 (1H, br s)

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-pyrazolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ):2.44 (3H, s), 3.28 (3H, s), 3.68 (1H, dd, J=17.4 Hz),3.81-3.99 (2H), 5.50 (2H, s), 5.79 (1H, d, J=3 Hz), 6.71 (1H, d, J=7Hz), 6.85 (1H, t, J=7 Hz), 7.34 (1H, d, J=9 Hz), 7.42-7.60 (2H), 7.78(1H, d, J=7 Hz), 7.89 (1H, d, J=3 Hz)

(3) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(4-pyrimidinyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.28 (3H, s), 3.80 (1H, dd, J=17, 5 Hz),4.03 (1H, dd, J=17, 5 Hz), 5.49 (2H, s), 6.71 (1H, d, J=7 Hz), 6.81-6.95(2H), 7.36 (1H, d, J=9 Hz), 7.45 (1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz),8.40 (1H, d, J=6 Hz), 8.76-8.85 (2H), 9.35 (1H, br s)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(6-quinolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.24 (3H, s), 3.80 (1H, d, J=5 Hz), 3.87(1H, d, J=5 Hz), 5.43 (1H, d, J=10 Hz), 5.52 (1H, d, J=10 Hz), 6.15 (1H,br t, J=5 Hz), 6.72 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.19-7.46(4H), 7.70-8.00 (4H), 8.35 (1H, s), 8.70 (1H, d, J=5 Hz)

(5) 3-Bromo-8- 3- N-N'-n-butylureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 0.90 (3H, t, J=6 Hz), 1.21-1.54 (4H), 2.42 (3H, s), 3.12(1H, q, J=6 Hz), 3.23 (3H, S), 3.52 (2H, dd, J=17, 5 Hz), 3.80 (1H, dd,J=17, 5 Hz), 4.68 (1H, br t, J=6 Hz), 5.30 (1H, br t, J=5 Hz), 5.49 (2H,s), 6.71 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.33 (1H, d, J=9 Hz),7.48 (1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-quinolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.22 (3H, s), 3.86 (1H, dd, J=17, 5 Hz),3.99 (1H, dd, J=17, 5 Hz), 5.42 (1H, d, J=10 Hz), 5.52 (1H, d, J=10 Hz),6.11 (1H, br t, J=5 Hz), 6.71 (1H, d, J=7 Hz), 6.89 (1H, t, J=7 Hz),7.31-7.55 (4H), 7.61 (1H, d, J=9 Hz), 7.79 (1H, d, J=7 Hz), 7.91 (1H, d,J=9 Hz), 8.35 (1H, d, J=3 Hz), 8.51 (1H, d, J=3 Hz), 8.80 (1H, br s)

(7) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-pyridylcarbamoyl)phenyl!ureidoacetyl!amino!-benzyloxyy-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.25 (3H, s), 3.90-4.03 (2H, m), 5.11 (1H,d, J=10 Hz), 5.38 (1H, d, J=10 Hz), 6.54-6.69 (2H, m), 6.81 (1H, br s),6.90 (1H, t, J=7.5 Hz), 7.01 (1H, t, J=8 Hz), 7.20-7.40 (3H, m), 7.50(1H, d, J=8 Hz), 7.78 (1H, d, J=6 Hz), 7.94 (2H, d, J=6 Hz), 8.28 (1H,br s), 8.57 (2H, d, J=6 Hz)

(8) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N-'3-(1-pyrrolidinylcarbonyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.76-1.99 (4H, m), 2.40 (3H, s), 3.20 (3H, s), 3.40 (2H,t, J=7 Hz), 3.55-3.74 (3H, m), 3.81 (1H, dd, J=4, 17 Hz), 5.36-5.52 (2H,m), 5.90-6.00 (1H, m), 6.72 (1H, d, J=8 Hz), 6.85 (1H, t, J=8 Hz), 7.10(1H, d, J=6 Hz), 7.18-7.28 (1H, m), 7.28-7.48 (4H, m), 7.77 (1H, d, J=6Hz), 7.93 (1H, br s)

(9) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'- 3-N-methyl-N-(3-pyridylmethyl)carbamoyl!phenyl!-ureidoacetyl!amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 2.82-3.02 (3H), 3.21 (3H, s), 3.69 (1H,dd, J=18, 5 Hz), 3.80 (1H, dd, J=18, 5 Hz), 4.52 (0.5H, br s), 4.73(1.5H, br s), 5.42 (1H, d, J=10 Hz), 5.51 (1H, d, J=10 Hz), 5.96 (1H, brt, J=5 Hz), 6.72 (1H, d, J=7 Hz), 6.87 (1H, t, J=7 Hz), 7.01 (1H, br d,J=7 Hz), 7.18-7.52 (7H), 7.78 (1H, d, J=6 Hz), 8.00 (1H, m), 8.50-8.65(2H)

(10) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-methyl-1-piperazinylcarbonyl)phenyl!ureidoacetyl!-amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.21-2.55 (10H), 3.21 (3H, s), 3.33-3.53 (2H), 3.60-3.90(4H), 5.43 (1H, d, J=10 Hz), 5.51 (1H, d, J=10 Hz), 5.96 (1H, br t, J=5Hz), 6.72 (1H, d, J=7 Hz), 6.89 (1H, t, J=7 Hz), 6.98 (1H, d, J=7 Hz),7.18-7.48 (5H), 7.79 (1H, d, J=7 Hz), 8.00 (1H, br s)

(11) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(3-pyridylmethylcarbamoyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.19 (3H, s), 3.62 (1H, dd, J=17, 5 Hz),4.57 (2H, d, J=5 Hz), 5.49 (2H, s), 6.21 (1H, br t, J=5 Hz), 6.72 (1H,d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.01 (1H, t, J=8 Hz), 7.18-7.39 (5H),7.45 (1H, d, J=9 Hz), 7.62-7.80 (3H), 8.25 (1H, br s), 8.49 (1H, dd,J=5, 1 Hz), 8.60 (1H, br s)

(12) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(dimethylamino)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 2.92 (6H, s), 3.22 (3H, s), 3.63 (1H, dd,J=17, 5 Hz), 3.82 (1H, dd, J=17, 5 Hz), 5.47 (2H, s), 5.91 (1H, br t,J=5 Hz), 6.46 (1H, dd, J=8, 2 Hz), 6.69-6.80 (3H), 6.86 (1H, t, J=7 Hz),7.13 (1H, t, J=8 Hz), 7.31 (1H, d, J=8 Hz), 7.44 (1H, d, J=8 Hz), 7.77(1H, d, J=7 Hz)

(13) 8- 3- N- N'- 3-N,N-Bis(2-methoxyethyl)carbamoyl!-phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.22-3.83 (19H, m), 5.45 (1H, d, J=10 Hz),5.53 (1H, d, J=10 Hz), 5.82 (1H, t-like), 6.73 (1H, d, J=8 Hz), 6.88(1H, dd, J=6, 8 Hz), 7.01 (1H, d, J=8 Hz), 7.17-7.48 (5H, m), 7.58 (1H,br s), 7.78 (1H, d, J=6 Hz)

(14) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-pyridylcarbamoyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.25 (3H, s), 3.81-4.06 (2H, m), 5.10 (1H,br d, J=9 Hz), 5.36 (1H, d, J=9 Hz), 6.55-6.64 (2H, m), 6.80 (1H, br s),6.90 (1H, t, J=7 Hz), 7.01 (1H, t, J=7 Hz), 7.24-7.32 (2H, m), 7.36 (1H,d, J=8 Hz), 7.50 (1H, br d, J=9 Hz), 7.84 (2H, d, J=8 Hz), 8.31 (1H, brs), 8.58 (2H, d, J=8 Hz), 9.76 (1H, br s)

Example 78

The following compounds were obtained according to a similar manner tothat of Example 57.

(1) 3-Bromo-8- 3-N-(4-carboxycinnamoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 230° C. (dec.)

NMR (DMSO-d₆, δ): 2.29 (3H, s), 3.15 (3H, s), 3.54 (1H, dd, J=16, 5 Hz),3.81 (1H, dd, J=16, 6 Hz), 5.49 (2H, s), 6.90 (1H, d, J=16 Hz),7.61-7.73 (2H, m), 7.79 (1H, d, J=7 Hz), 7.84 (1H, d, J=7 Hz), 7.88-8.01(3H, m), 8.41 (1H, t, J=5 Hz)

(2) 3-Chloro-8- 3-N-(4-carboxycinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine

mp: >250° C.

NMR (DMSO-d₆, δ): 2.30 (3H, s), 3.17 (3H, s), 3.82 (1H, dd, J=4, 18 Hz),5.50 (2H, s), 6.80-7.06 (3H, m), 7.45 (1H, d, J=76 Hz), 7.63-7.74 (2H,m), 7.74-7.88 (2H, m), 7.88-8.03 (3H, m), 8.33-8.48 (1H, m)

(3) 3-Bromo-8- 3- N-(E)-3-(6-carboxy-3-pyridyl)acryloylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine mp: 226°-228° C. (dec.)

NMR (DMSO-d₆, δ): 2.30 (3H, s), 3.16 (3H, s), 3.45-3.62 (1H, overlappedwith H₂ O), 3.82 (1H, dd, J=18, 5 Hz), 5.49 (2H, ), 6.93-7.12 (3H), 7.51(1H, d, J=16 Hz), 7.79 (1H, d, J=9 Hz), 7.85 (1H, d, J=9 Hz), 7.93 (2H,dd, J=5, 3 Hz), 8.01-8.20 (2H), 8.44 (1H, br t, J=5 Hz), 8.89 (1H, br s)

Example 79

The following compounds were obtained according to a similar manner tothat of Example 67.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N N'-3-(morpholinocarbonyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.41 (3H, s), 3.21 (3H, s), 3.33-3.89 (10H), 5.48 (2H,s), 6.01 (3H, br t, J=5 Hz), 6.72 (1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz),6.98 (1 Hz, d, J=8 Hz), 7.15-7.48 (5H), 7.78 (1H, d, J=7 Hz), 8.10 (1H,br s)

(2) 3-Bromo-8- 2,6-dichloro-3- N-4-(ethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.28 (3H, t, J=7 Hz), 2.44 (3H, s), 3.29 (3H, s),3.42-3.60 (2H), 3.68 (1H, dd, J=18, 4 Hz), 3.91 (1H, dd, J=18, 5 Hz),5.50 (2H, s), 6.13 (1H, br t, J=5 Hz), 6.52 (1H, d, J=15 Hz), 6.67-6.78(2H), 6.87 (1H, t, J=7 Hz), 7.34 (1H, d, J=8 Hz), 7.48-7.66 (4H),7.71-7.81 (3H)

(3) 3-Bromo-8- 2,6-dichloro-3- N-4-(N-ethyl-N-methylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.08-1.31 (3H), 2.45 (3H, s), 2.90-3.12 (3H), 3.20-3.39(4H), 3.51-3.77 (2H), 3.91 (1H, dd, J=18, 5 Hz), 5.50 (2H, s), 6.51 (1H,d, J=15 Hz), 6.68 (1H, br, t, J=5 Hz ), 6.72 (1H, d, J=7 Hz), 6.88 (1H,t, J=7 Hz), 7.30-7.64 (7H), 7.78 (1H, d, J=7 Hz)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(1-pyrrolidinylcarbonyl)cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.80-2.07 (4H, m), 2.44 (3H, s), 3.28 (3H, s), 3.43 (2H,t, J=6 Hz), 3.57-3.74 (3H, m), 3.91 (1H, dd, J=4, 18 Hz), 5.42-5.56 (2H,m), 6.49 (1H, d, J=16 Hz), 6.63 (1H, t-like), 6.71 (1H, d, J=7.5 Hz),6.85 (1H, t, J=7.5 Hz), 7.33 (1H, d, J=8 Hz), 7.44-7.66 (6H, m), 7.77(1H, d, J=6 Hz)

(5) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(morpholinocarbonyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1, 2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.27 (3H, s), 3.35-3.87 (9H, m), 3.91 (1H,dd, J=4, 18 Hz), 5.41-5.58 (2H, m), 6.50 (1H, d, J=16 Hz), 6.65 (1H,t-like), 6.72 (1H, d, J=7.5 Hz), 6.85 (1H, t, J=7.5 Hz), 7.33 (1H, d,J=8 Hz), 7.41 (2H, d, J=8 Hz), 7.47-7.64 (4H, m), 7.77 (1H, d, J=6 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N- 4-N-(2-methoxyethyl)-N-methylcarbamoyl!cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.00-3.15 (3H, m), 3.23-3.50 (8H, m),3.60-3.78 (3H, m), 3.93 (1H, dd, J=4, 18 Hz), 5.44-5.56 (2H, m), 6.50(1H, d, J=16 Hz), 6.64 (1H, t-like), 6.72 (1H, d, J=7.5 Hz), 6.86 (1H,t, J=7.5 Hz), 7.34 (1H, d, J=8 Hz), 7.39-7.65 (6H, m), 7.78 (1H, d, J=6Hz)

(7) 3-Bromo-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 2.99 (3H, br s), 3.10 (3H, br s), 3.29(3H, s), 3.69 (1H, dd, J=17, 4 Hz), 3.91 (1H, dd, J=17, 5 Hz), 5.47 (1H,d, J=10 Hz), 5.52 (1H, d, J=10 Hz), 6.50 (1H, d, J=15 Hz), 6.65 (1H, brt, J=4 Hz), 6.71 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.29-7.62 (7H),7.78 (1H, d, J=7 Hz)

(8) 3-Bromo-8- 2,6-dichloro-3- N-4-(isopropylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 238° C. (dec.)

NMR (CDCl₃, δ): 1.27 (6H, d, J=6 Hz), 2.44 (3H, s), 3.28 (3H, s), 3.67(1H, dd, J=4, 18 Hz), 3.91 (1H, dd, J=4, 18 Hz), 4.31 (1H, m), 5.43-5.57(2H, m), 5.92 (1H, d, J=6 Hz), 6.53 (1H, d, J=16 Hz), 6.63-6.77 (2H, m),6.86 (1H, t, J=7.5 Hz), 7.34 (1H, d, J=8 Hz), 7.46-7.65 (4H, m),7.68-7.81 (1H, m)

(9) 3-Bromo-8- 2,6-dichloro-3- N-4-(n-propylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.00 (3H, t, J=7.5 Hz), 1.63 (2H, m), 2.44 (3H, s), 3.28(3H, s), 3.43 (2H, q, J=7.5 Hz), 3.67 (1H, dd, J=4, 18 Hz), 3.92 (1H,dd, J=4, 18 Hz), 5.43-5.56 (2H, m), 6.13 (1H, t-like), 6.54 (1H, d, J=16Hz), 6.64-6.77 (2H, m), 6.85 (1H, t, J=7.5 Hz), 7.35 (1H, d, J=8 Hz),7.44-7.66 (4H, m), 7.69-7.81 (1H, m)

(10) 3-Bromo-8- 2,6-dichloro-3- N-4-(3-methoxypropylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.90 (2H, quint, J=6 Hz), 2.45 (3H, s), 3.28 (3H, s),3.40 (3H, s), 3.51-3.75 (5H, m), 3.91 (1H, dd, J=4, 18 Hz), 5.43-5.57(2H, m), 6.53 (1H, d, J=16 Hz), 6.62-6.77 (2H, m), 6.86 (1H, t, J=7.5Hz), 6.99 (1H, t-like), 7.34 (1H, d, J=8 Hz), 7.45-7.67 (4H, m),7.71-7.81 (3H, m)

(11) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-ethoxyethylcarbamoyl)cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃ --CD₃ OD, δ): 1.23 (3H, t, J=7 Hz), 2.43 (3H, s), 3.28 (3H,s), 3.46-3.77 (7H, m), 3.93 (1H, dd, J=4, 18 Hz), 5.42-5.56 (2H, m),6.46-6.61 (2H, m), 6.65-6.78 (2H, m), 6.87 (1H, t, J=7.5 Hz), 7.35 (8H,d), 7.46-7.64 (4H, m), 7.72-7.83 (3H, m)

(12) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-hydroxyethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimiazo1,2-a!pyridine

NMR (CDCl₃ --CD₃ OD, δ): 2.41 (3H, s), 3.26 (3H, s), 3.34-3.46 (1H, m),3.57 (2H, g, J=5 Hz), 3.65-3.81 (3H, m), 3.95 (1H, d, J=17.5 Hz), 5.50(2H, s), 6.58 (1H, d, J=16 Hz), 6.75 (1H, d, J=7.5 Hz), 6.89 (1H, t,J=7.5 Hz), 7.42 (1H, d, J=8 Hz), 7.48-7.63 (4H, m), 7.73-7.87 (3H, m)

(13) 3-Bromo-8- 2,6-dichloro-3- N-4-(diethylcarbamoyl)cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.00-1.35 (6H, m), 2.43 (3H, s), 3.26 (3H, s), 3.40-3.75(5H, m), 3.91 (1H, dd, J=4, 18 Hz), 5.47 (1H, d, J=10 Hz), 5.53 (1H, d,J=10 Hz), 6.48 (1H, d, J=16 Hz), 6.65 (1H, t-like), 6.71 (1H, d, J=7.5Hz), 6.86 (1H, t, J=7.5 Hz), 7.30-7.45 (3H, m), 7.45-7.64 (4H, m), 7.76(6H, d)

(14) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(2-methoxyethylcarbamoyl)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.23 (3H, s), 3.35 (3H, s), 3.49-3.79 (5H,m), 3.87 (1H, dd, J=18, 5 Hz), 5.44 (1H, d, J=10 Hz), 5.52 (1H, d, J=10Hz), 6.07 (1H, t-like), 6.72 (1H, d, J=8 Hz), 6.80-6.93 (2H, m),7.15-7.60 (6H, m), 7.78 (1H, d, J=6 Hz), 7.92 (1H, s)

(15) 3-Bromo-8- 2,6-dichloro-3- N- N'- 3-N-(2-methoxyethyl)-N-methylcarbamoyl!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!-pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 2.96-3.14 (3H, m), 3.20-3.49 (8H, 3),3.58-3.90 (4H, M), 5.43 (1H, d, J=10 Hz), 5.51 (1H, d, J=10 Hz), 5.88(1H, t-like), 6.72 (1H, d, J=7.5 Hz), 6.86 (1H, t, J=7.5 Hz), 7.00 (1H,dif-dd, J=7.5 Hz), 7.18-7.47 (5H, m), 7.72 (1H, s), 7.77 (1H, d, J=6 Hz)

(16) 3-Bromo-8- 2,6-dichloro-3- N- N'- 3-N,N-bis(2-ethoxyethyl)carbamoyl!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.07-1.28 (6H, m), 2.40 (3H, s), 3.20 (3H, s), 3.28-3.81(14H, m), 5.45 (1H, d, J=10 Hz), 5.54 (1H, d, J.=10 Hz), 5.84 (1H,t-like), 6.73 (1H, d, J=7.5 Hz), 6.89 (1H, t, J=7.5 Hz), 7.03 (1H, d,J=7.5 Hz), 7.18-7.49 (5H, m), 7.58 (1H, s), 7.79 (8H, d, s)

(17) 3-Bromo- 2,6-dichloro-3- N- N'- 3-N,N-bis(2-hydroxyethyl)carbamoyl!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, m), 3.23 (3H, s), 3.26-4.01 (12H, m),5.39-5.55 (2H, m), 6.01 (1H, t-like), 3.71 (1H, d, J=7.5 Hz), 6.86 (1H,t, J=7.5 Hz), 7.02 (1H, d, J=7.5 Hz), 7.10-7.53 (5H, m), 7.77 (1H, d,J=6 Hz), 8.36 (1H, s)

(18) 3-Chloro-8- 2,6-dichloro-3- N-4-(N-ethyl-N-methylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ):1.05-1.32 (3H, m), 2.43 (3H, s), 2.88-3.13 (3H, m),3.20-3.37 (4H, m), 3.47-3.76 (2H, m), 3.93 (1H, dd, J=4, 18 Hz),5.41-5.57 (2H, m), 6.50 (1H, d, J=16 Hz), 6.60-6.75 (2H, m), 6.86 (1H,t, J=7.5 Hz), 7.30-7.46 (3H, m), 7.46-7.64 (4H, m), 7.73 (1H, d, J=6 Hz)

(19) 3-Chloro-8- 2,6-dichloro-3- N-4-(ethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.24 (3H, t, J=7.5 Hz), 2.41 (3H, s), 3.26 (3H, s), 3.50(2H, quint, J=7.5 Hz), 3.65 (1H, dd, J=4, 18 Hz), 3.90 (1H, dd, J=4, 18Hz), 5.43-5.55 (2H, m), 6.10 (1H, t-like), 6.53 (1H, d, J=16 Hz),6.63-6.75 (2H, m), 6.85 (1H, t, J=7.5 Hz), 7.33 (1H, d, J=8 Hz),7.44-7.64 (4H, m), 7.67-7.80 (3H, m)

(20) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(E)-3-(6-methylcarbamoyl-3-pyridyl)acryloylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 3.05 (3H, d, J=5 Hz), 3.29 (3H, s), 3.70(1H, dd, J=18, 4 Hz), 3.92 (1H, dd, J=18, 5 Hz), 5.49 (1H, d, J=10 Hz),5.52 (1H, d, J=10 Hz), 6.61 (1H, d, J=16 Hz), 6.70-6.79 (2H), 6.88 (1H,t, J=7.5 Hz), 7.34 (1H, d, J=7.5 Hz), 7.50 (1H, d, J=7.5 Hz), 7.61 (1H,d, J=16 Hz), 7.78 (1H, d, J=7.5 Hz), 7.92-8.02 (2H), 8.20 (1H, d, J=7.5Hz), 8.62 (1H, br s)

(21) 3-Bromo-8- 2,6-dichloro-3- N-(E)-3-(6-dimethylcarbamoyl-3-pyridyl)acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.11 (3H, s), 3.16 (3H, s), 3.29 (3H, s),3.69 (1H, dd, J=18, 5 Hz), 3.91 (1H, dd, J=18, 5 Hz), 5.49 (1H, d, J=10Hz), 5.52 (1H, d, J=10 Hz), 6.60 (1H, d, J=16 Hz), 6.70-6.78 (2H), 6.87(1H, t, J=7.5 Hz), 7.35 (1H, d, J=8 Hz), 7.50 (1H, d, J=8 Hz), 7.60 (1H,d, J=16 Hz), 7.69 (1H, d, J=8 Hz), 7.78 (1H, d, J=7.5 Hz), 7.91 (1H, dd,J=8, 2 Hz), 8.69 (1H, br s)

(22) 3-Bromo-8- 2,6-dichloro-3- N-(E)-3-(6ethylcarbamoyl-3-pyridyl)acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.29 (3H, t, J=7 Hz), 2.45 (3H, s), 3.29 (3H, s),3.48-3.59 (2H), 3.70 (1H, dd, J=18, 4 Hz), 3.92 (1H, dd, J=18, 5 Hz),5.49 (1H, d, J=10 Hz), 5.53 (1H, d, J=10 Hz), 6.61 (1H, d, J=16 Hz),6.70-6.79 (2H), 6.87 (1H, t, J=7.5 Hz), 7.36 (1H, d, J=8 Hz), 7.51 (1H,d, J=8 Hz), 7.62 (1H, d, J=16 Hz), 7.68 (1H, d, J=7 Hz), 7.92-8.01 (2H),8.20 (1H, d, J=7.5 Hz), 8.63 (1H, br s)

(23) 3-Bromo-8- 2,6-dichloro-3- N- (E)-3-6-(3-methoxypropylcarbamoyl)-3-pyridyl!acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.91 (2H, quint, J=6.5 Hz), 2.45 (3H, s), 3.28 (3H, s),3.38 (3H, s), 3.50-3.63 (4H, m), 3.68 (1H, dd, J=4, 18 Hz), 3.93 (1H,dd, J=4, 18 Hz), 5.48 (1H, d, J=10 Hz), 5.53 (1H, d, J=10 Hz), 6.61 (1H,d, J=16 Hz), 6.70-7.76 (2H, m), 6.86 (1H, t, J=7.3 Hz), 7.35 (1H, d,J=8.7 Hz), 7.50 (1H, d, J=8.3 Hz), 7.62 (1H, d, J=16 Hz), 7.78 (1H, d,J=7.5 Hz), 7.95 (1H, dd, J=8.3, 2.2 Hz), 8.20 (1H, d, J=8.3 Hz), 8.29(1H, t-like), 8.65 (1H, d, J=2.0 Hz)

Example 80

To a suspension of 3-bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-nitrophenyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (800 mg) in ethanol (8 ml) was added tin(II) chloride(954 mg) at ambient temperature. The mixture was refluxed for 1.5 hours.After cooling, the mixture was adjusted to pH 10 with 1N sodiumhydroxide solution. To this mixture was added dichloromethane (10 ml)and the precipitate was removed by filtration. The filtrate wasextracted with dichloromethane twice. The organic layer was washed withsaturated sodium bicarbonate, water and brine. After dried overmagnesium sulfate, the solvent was removed in vacuo. The residue waspurified by column chromatography eluting with dichloromethane-methanolto give 8- 3- N-N'-(3-aminophenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (539 mg) as amorphous.

p NMR (CDCl₃, δ): 2.42 (3H, s), 3.22 (3H, s), 3.56-3.75 (3H), 3.82 (1H,dd, J=18, 5 Hz), 5.48 (2H, s), 5.92 (1H, br t, J=4 Hz), 6.88 (1H, dd,J=8, 1 Hz), 6.53 (1H, br d, J=7 Hz), 6.72 (1H, d, J=7 Hz), 6.79-6.91(2H), 7.01 (1H, t, J=8 Hz), 7.09 (1H, br s), 7.33 (1H, d, J=9 Hz), 7.45(1H, d, J=9 Hz), 7.78 (1H, d, J=7 Hz)

Example 81

3-Bromo-8- 2,6-dichloro-3- N-4-(ethoxycarbonylacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained by reacting 8- 3-N-(4-aminocinnamoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine with ethyl chloroformylacetate according to a similarmanner to that of Example 37.

p NMR (CDCl₃, δ): 1.33 (3H, t, J=7.5 Hz), 2.44 (3H, s), 3.26 (3H, s),3.47 (2H, s), 3.65 (1H, dd, J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 4.26(2H, q, J=7.5 Hz), 5.42-5.55 (2H, m), 6.41 (1H, d, J=16 Hz), 6.60 (1H,t-like), 6.72 (1H, d, J=7.5 Hz), 6.85 (1H, t, J=7.5 Hz), 7.33 (1H, d,J=8 Hz), 7.43-7.64 (6H, m), 7.78 (1H, d, J=6 Hz), 9.45 (1H, s)

Example 82

8- 3- N-4-(Benzamido)cinnamoylglycyl!-N-ethylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine was obtained by reacting 8- 3-N-(4-aminocinnamoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine with benzoic acid in the presence ofN-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride and1-hydroxybenzotriazole according to a similar manner to that of Example39.

p NMR (CDCl₃, δ): 2.41 (3H, s), 3.25 (3H, s), 3.66 (1H, dd, J=18, 4 Hz),3.90 (1H, dd, J=18, 5 Hz) 5.49 (2H, br s), 6.42 (1H, d, J=16 Hz), 6.60(1H, br t), 6.72 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.18-7.80 (9H,m), 7.86 (2H, d, J=9 Hz), 8.01 (1H, br s)

Example 83

The following compounds were obtained according to similar manners tothose of Examples 81 or 82.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(4-pyridylacetamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.40 (3H, s), 3.23 (3H, s), 3.64 (1H, dd, J=18, 5 Hz),3.67 (2H, br s), 3.86 (1H, dd, J=18, 4 Hz), 5.42 (1H, d, J=9 Hz), 5.48(1H, d, J=9 Hz), 6.39 (1H, d, J=16 Hz), 6.63 (1H, br t, J=4 Hz), 6.73(1H, d, J=7.5 Hz), 6.86 (1H, t, J=7.5 Hz), 7.15-7.33 (3H, m), 7.35-7.57(6H, m), 7.78 (1H, d, J=7.5 Hz), 8.18 (1H br s), 8.58 (2H, dd, J=7, 2Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-4-(3-methoxypropionamido)cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.45 (3H, s), 2.65 (2H, t, J=6 Hz), 3.28 (3H, s), 3.46(3H, s), 3.59-3.79 (3H, m), 3.90 (1H, dd, J=4, 18 Hz), 5.42-5.57 (2H,m), 6.40 (1H, d, J=16 Hz), 6.60 (1H, t-like), 6.73 (1H, d, J=7 Hz), 6.87(1H, d, J=7 Hz), 7.33 (1H, d, J=8 Hz), 7.40-7.60 (6H, m), 7.77 (1H, d,J=6 Hz), 8.39 (1H, s)

(3) 8- 3- N-4-(Acetamidoacetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.10 (3H, s), 2.44 (3H, s), 3.27 (3H, s), 3.64 (1H, dd,J=4, 17.5 Hz), 3.92 (1H, dd, J=4, 17.5 Hz), 4.06 (2H, d, J=6 Hz),5.43-5.56 (2H, m), 6.35 (1H, d, J=16 Hz), 6.59 (1H, t-like), 6.66-6.92(3H, m), 7.30-7.57 (7H, m), 7.76 (1H, d, J=6 Hz), 8.86 (1H, s)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-2-(dimethylamino)acetamido!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.39 (6H, s), 2.43 (3H, s), 3.08 (2H, s), 3.28 (3H, s),3.68 (1H, dd, J=4, 17.5 Hz), 4.92 (1H, dd, J=4, 17.5 Hz), 5.42-5.56 (2H,m), 6.42 (1H, d, J=16 Hz), 6.59 (1H, t-like), 6.72 (1H, d, J=7.5 Hz),6.86 (1H, t, J=7.5 Hz), 7.33 (1H, d, J=8 Hz), 7.40-7.68 (6H, m), 7.76(1H, d, J=6 Hz), 9.23 (1H, s)

(5) 3-Bromo-8- 2,6-dichloro-3- N- 4-(E)-3-(ethoxycarbonyl)acrylamido!cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.30 (3H, J=7.5 Hz), 2.41 (3H, s), 3.25 (3H, s), 3.64(1H, dd, J=17, 4 Hz), 3.88 (1H, dd, J=17, 5 Hz), 4.24 (2H, q, J=7.5 Hz),5.42 (1H, d, J=9 Hz), 5.49 (1H, d, J=9 Hz), 6.40 (1H, d, J=16 Hz), 6.67(1H, br t, J=4 Hz), 6.73 (1H, d, J=7 Hz), 6.81-6.97 (2H, m), 7.10 (1H,d, J=15 Hz), 7.20 (2H, d, J=9 Hz), 7.36-7.52 (3H, m), 7.58 (1H, d, J=11Hz), 7.63 (1H, d, J=7 Hz), 7.78 (1H, d, J=7 Hz), 8.82 (1H, br s)

(6) 3-Bromo-8- 2,6-dichloro-3- N-4-(hydroxyacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy)-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.39 (3H, s), 3.24 (3H, s), 3.67 (1H, dd, J=17, 4 Hz),3.94 (1H, dd, J=17, 5 Hz), 4.11 (2H, s), 5.48 (2H, s), 6.30 (1H, d, J=15Hz), 6.66-6.90 (2H, m), 6.86 (1H, t, J=7 Hz), 7.25-7.60 (7H, m), 7.76(1H, d, J=7 Hz), 8.78 (1H, br s)

(7) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-chloroethoxycarbonylamino)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.27 (3H, s), 3.57-3.80 (3H, m), 3.91 (1H,dd, J=4, 18 Hz), 4.45 (2H, t, J=6 Hz), 5.50 (2H, s), 6.40 (1H, d, J=16Hz), 6.60 (1H, t-like), 6.72 (1H, d, J=7.5 Hz), 6.80-6.91 (2H, m),7.22-7.60 (7H, m), 7.78 (1H, d, J=6 Hz)

(8) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(methoxyacetamido)phenyl!ureidoacetyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

mp: 238°-239° C.

NMR (CDCl₃ --CD₃ OD, δ): 2.40 (3H, s), 3.25 (3H, s), 345-3.68 (4H,overlapped with H₂ O), 3.89 (1H, d, J=18 Hz), 4.00 (2H, s), 5.50 (2H,s), 6.78 (1H, d, J=7 Hz), 6.91 (5H, t, J=7 Hz), 7.08-7.38 (3H), 7.44(1H, d, J=9 Hz), 7.52 (1H, d, J=9 Hz), 7.59 (1H, br s), 7.80 (1H, d, J=7Hz)

(9) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(ethoxycarbonylacetamido)phenyl!ureidoacetyl!-N-methylaminobenzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 1.27 (3H, t, J=7 Hz), 2.40 (3H, s), 3.19 (3H, s), 3.41(2H, s), 3.59 (1H, br d, J=18 Hz), 3.89 (1H, br d, J=18 Hz), 4.19 (2H,q, J=7 Hz), 5.40 (2H, s), 6.22 (1H, br s), 6.72 (1H, d, J=7 Hz), 6.88(1H, t, J=7 Hz), 7.00-7.52 (6H), 7.78 (1H, d, J=7 Hz), 8.18 (7H, br s),9.62 (1H, br s)

(10) 3-Chloro-8- 2,6-dichloro-3- N-4-(3-methoxypropionamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.31 (3H, s), 2.63 (2H, t, J=5 Hz), 3.26 (3H, s), 3.47(3H, s), 3.61-3.77 (3H) 3.90 (1H, dd, J=18, 5 Hz), 5.48 (1H, d, J=10Hz), 5.51 (1H, d, J=10 Hz), 6.39 (1H, d, J=15 Hz), 6.60 (1H, br s), 6.71(1H, d, J=7.5 Hz), 6.87 (1H, t, J=7.5 Hz), 7.32 (1H, d, J=8 Hz),7.41-7.58 (6H), 7.72 (1H, d, J=7.5 Hz), 8.45 (1H, br s)

(11) 8- 3- N-4-(Acetamidoacetamido)cinnamnoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ):2.09 (3H, s), 2.42 (3H, s), 3.25 (3H, s), 3.64 (1H, dd,J=4, 18 Hz), 3.90 (1H, dd, J=4, 18 Hz), 4.05 (2H, d, J=5 Hz), 5.43-5.54(2H, m), 6.39 (1H, d, J=16 Hz), 6.62 (1H, t-like), 6.70 (1H, d, J=7.7Hz), 6.80 (1H, t-like), 6.86 (1H, t, J=7.7 Hz), 7.32-7.55 (7H, m), 7.72(2H, d, J=6 Hz), 8.85 (1H, s)

Example 84

A solution of 8- 3-N-(4-aminocinnamoylglycyl)-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (150 mg) and succinic anhydride (26 mg) in dioxane (3 ml)was refluxed for 2 hours. After cooling, the solution was removed invacuo to give 3-bromo-8- 3- N-4-(3-carboxypropionamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (175 mg) as amorphous.

p NMR (CDCl₃ --CD₃ OD, δ): 2.41 (3H, s), 2.59-2.70 (4H), 3.27 (3H, s),3.64 (1H, d, J=18 Hz), 3.98 (1H, d, J=18 Hz), 5.51 (2H, s), 6.41 (1H, d,J=15 Hz), 6.76 (1H, d, J=7 Hz), 6.90 (1H, t, J=7 Hz), 7.38-7.62 t7H),7.79 (1H, d, J=7 Hz)

Example 85

A solution of 8-3-(N-glycyl-N-methylamino)-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (300 mg) and dimethyl cyanodithioiminocarbonate (93 mg)in dimethylformamide (3 ml) was heated at 700° C. for 1 hour. Aftercooling the reacting mixture, to the mixture was added 70% solution ofethylamine in water (0.57 ml) and the mixture was heated at 60° C. for 2hours. To this mixture was added water (3 ml) in an ice-water bath. Theprecipitates were collected by vacuum filtration and washed with ethylacetate to give 3-bromo-8- 3- N-(2-cyano-3-ethylguanidino)acetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (278 mg) as colorless crystals.

mp: >250° C.

p NMR (CDCl₃ --CD₃ OD, δ): 1.20 (3H, t, J=7 Hz), 2.39 (3H s), 3.16-3.31(5H), 3.61 (1H, d, J=17 Hz), 3.73 (1H, d, J=17 Hz), 5.47 (1H, d, J=10Hz), 5.57 (1H, d, J=10 Hz), 6.79 (1H, d, J=7 Hz), 6.91 (1H, t, J=7 Hz),7.42 (1H, d, J=9 Hz), 7.56 (1H, d, J=9 Hz), 7.80 (1H, d, J=7 Hz)

Example 86

A suspension of 3-bromo-8- 3- N-4-(3-carboxypropionamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine (110 mg) and anhydrous sodium acetate (16 mg) in aceticanhydride (1.1 ml) was refluxed for 5 hours. After cooling, the solventwas removed in vacuo. The residue was dissolved in dichloromethane (5ml) and washed with water, saturated sodium bicarbonate twice and brine.After dried over magnesium s the solvent was removed in vacuo. Theresidue was purified by preparative thin-layer chromatography (ethylacetate-methanol) to give 3-bromo-8- 2,6-dichloro-3- N-4-(succinimido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (12 mg) as amorphous.

p NMR (CDCl₃, δ): 2.43 (3H, s), 2.91 (4H, s), 3.29 (3H, s), 3.68 (1H,dd, J=18, 4 Hz), 3.91 (1H, dd, J=18, 5 Hz), 5.48 (1H, d, J=10 Hz), 5.53(1H, d, J=10 Hz), 6.50 (1H, d, J=16 Hz), 6.68 (1H, br t, J=4 Hz), 6.72(1H, d, J=7 Hz), 6.88 (1H, t, J=7 Hz), 7.22-7.39 (3H), 7.48-7.67 (4H),7.78 (1H, d, J=7 Hz)

Example 87

To a solution of 3-bromo-8- 2,6-dichloro-3- N-4-(2-chloroethoxycarbonylamino)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (128 mg) in methanol was added dropwise sodiummethanolate (28% in methanol, 37 mg) under nitrogen in ice-water bathand the mixture was stirred for 1 hour at same temperature and then atambient temperature for 2 hours. The reaction mixture was poured intowater and extracted with dichloromethane. The organic layer was washedwith water and brine, dried over magnesium sulfate and evaporated invacuo. The residue was purified by preparative thin layerchromatography(ethyl acetate) to give 3-bromo-8- 2,6-dichloro-3- N-4-(2-oxo-3-oxazolidinyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (77 mg) as an amorphous powder.

p NMR (CDCl₃, δ): 2.44 (3H, s), 3.28 (3H, s), 3.66 (1H, dd, J=4, 18 Hz),3.91 (1H, dd, J=4, 18 Hz), 4.10 (2H, dd, J=6, 8 Hz), 4.53 (2H, dd, J=6,8 Hz), 5.45-5.57 (2H, m), 6.43 (1H, d, J=16 Hz), 6.60 (1H, t-like), 6.72(1H, d, J=7.5 Hz), 6.85 (1H t, J=7.5 Hz), 7.34 (1H, d, J=8 Hz),7.45-7.62 (6H, m), 7.76 (6H, d)

Example 88

(1) 3-Bromo-8- 3- N- N'-3-(4-bromobutyramido)phenyl!-ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 82.

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(2-oxo-1-pyrrolidinyl)phenyl!ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 87.

NMR (CDCl₃, δ): 2.01-2.27 (2H), 2.41 (3H, s), 2.59 (2H, t, J=8 Hz), 3.23(3H, s), 3.63 (1H, dd, J=17, 5 Hz), 3.74-3.92 (3H), 4.58 (1H, br t, J=6Hz), 5.46 (2H, s), 5.99 (1H, br t, J=5 Hz), 6.72 (1H, d, J=7 Hz), 6.88(1H, t, J=8 Hz), 7.02-7.50 (5H), 7.60 (1H, d, J=9 Hz), 7.77 (1H, d, J=7Hz)

Example 89

A mixture of 3-bromo-8- 2,6-dichloro-3- N-4-(3-carboxypropionamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (60 mg), ethanol (12 mg),N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (21 mg),1-hydroxybenzotriazole (17 mg) and N,N-dimethylformamide (0.6 ml) wasstirred for 3 hours at ambient temperature. Ethyl acetate was addedthereto, and the mixture was washed with water four times, dried overmagnesium sulfate and concentrated in vacuo. The residue was purified bypreparative thin layer chromatography (methylene chloride:methanol=10:1,V/V) to give 3-bromo-8- 2,6-dichloro-3- N-4-(3-ethoxycarbonylpropionamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (7 mg) as an amorphous.

p NMR (CDCl₃, δ): 1.28 (3H, t, J=7 Hz), 2.44 (3H, s), 2.60-2.82 (4H),3.28 (3H, s), 3.66 (1H, dd, J=18, 4 Hz), 3.91 (1H, dd, J=18, 5 Hz), 4.18(2H, q, J=7 Hz), 5.49 (2H, s), 6.39 (1H, d, J=15 Hz), 6.61-6.79 (2H),6.87 (1H, t, J=7 Hz), 7.30-7.60 (7H), 7.78 (1H, d, J=7 Hz), 8.12 (1H, brs)

Example 90

To a solution of 8- 3- N-N'-(3-acetylphenyl)ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine (200 mg) in methanol (2 ml) was added sodium borohydride(24 mg) under ice-bath cooling, and the mixture was stirred for 1 hourat ambient temperature. To the reaction mixture was added 1Nhydrochloric acid, and the mixture was stirred for 30 minutes. Saturatedaqueous solution of sodium bicarbonate was added thereto, and themixture was extracted with methylene chloride three times. The combinedorganic layer was washed with water and brine, dried over magnesiumsulfate, and concentrated in vacuo. The residue was purified by silicagel column chromatography (methylene chloride:methanol=30:1, V/V) togive 3-bromo-8- 2,6-dichloro-3- N- N'-3-(1-hydroxyethyl)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (160 mg) as an amorphous.

p NMR (CDCl₃, δ): 1.41 (3H, d, J=6 Hz), 2.41 (3H, 8), 3.22 (3H, s), 3.61(1H, br dt, J=17, 3 Hz), 3.88 (1H, dd, J=17, 5 Hz), 4.79 (1H, m), 5.49(2H, s), 6.09 (1H, br t, J=5 Hz), 6.72 (1H, d, J=7 Hz), 6.87 (1H, t, J=7Hz), 6.96 (1H, m), 7.10-7.49 (4H), 7.59 (1H, br d, J=7 Hz), 7.78 (1H, d,J=7 Hz)

Example 91

To a solution of 3-bromo-8- 2,6-dichloro-3- N-methyl-N-(thiomorpholinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (200 mg) in methylene chloride (2 ml) was addedm-chloroperbenzoic acid (80% purity, 76 mg) under ice-bath cooling, andthe mixture was stirred for 1 hour at the same temperature. The reactionmixture was washed with water twice and brine, dried over magnesiumsulfate, and concentrated in vacuo. The residue was purified bypreparative thin layer chromatography (methylene chloride:methanol=5:1,V/V) to give 3-bromo-8- 2,6-dichloro-3- N-methyl-N-(1-oxothiomorpholino)acetyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!-pyridine (96 mg) as an amorphous.

p NMR (CDCl₃, δ): 2.44 (3H, d), 2.70-3.02 (6H), 3.11 (2H, s), 3.15-3.36(5H), 3.57 (1H, dd, J=17, 5 Hz), 3.85 (1H, dd, J=17, 5 Hz), 5.47 (1H,dd, J=10 Hz), 5.52 (1H, d, J=10 Hz ), 6.71 (1H, d, J=7 Hz), 6.86 (1H, t,J=7 Hz), 7.31 (1H, d, J=9 Hz), 7.50 (1H, d, J=9 Hz), 7.79 (1H, d, J=7Hz), 7.84 (1H, br t, J=5 Hz)

Example 92

To a solution of 3-bromo-8- 2,6-dichloro-3- N-methyl-N-(thiomorpholinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine (200 mg) in methylene chloride (2 ml) was addedm-chloroperbenzoic acid (80% purity, 190 mg) under ice-bath cooling, andthe mixture was stirred for 2 hours at the same temperature. Thereaction mixture was washed with water twice and brine, dried overmagnesium sulfate, and concentrated in vacuo. The residue was purifiedby preparative thin layer chromatography (methylenechloride:methanol=3:1, V/V) to give 3-bromo-8- 2,6-dichloro-3- N-(1,1-dioxothiomorpholino)acetyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine (99 mg) as an amorphous.

p NMR (CDCl₃, δ): 2.43 (3H, s), 2.81-3.01 (2H), 3.21 (3H, s), 3.48-4.20(10H), 5.50 (2H, s), 6.71 (1H, d, J=7 Hz), 6.86 (1H, t, J=7 Hz), 7.40(1H, d, J=9 Hz), 7.50 (1H, d, J=9 Hz), 7.77 (1H, d, J=7 Hz)

Example 93

The following compounds were obtained according to a similar manner tothat of Example 60.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(thiomorpholinoacetyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.61 (3H, s), 2.70-4.30 (15H), 5.65 (1H, d,J=10 Hz), 5.75 (1H, d, J=10 Hz), 7.52-7.70 (4H), 8.22 (1H, dd, J=5, 3Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(1-oxothiomorpholino)acetyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.67 (3H, s), 3.00-3.19 (2H), 3.22 (3H, s),3.57-4.24 (10H), 5.60 (1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 7.39-7.66(4H), 8.10 (1H, d, J=6 Hz)

(3) 3-Bromo-8- 2,6-dichloro-3- N-(1,1-dioxothiomorpholino)acetyl!glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.63 (3H, s), 3.00-3.19 (2H), 3.24 (3H, s),3.35-3.57 (2H), 3.72 (1H, d, J=16 Hz), 3.93 (1H, d, J=16 Hz), 4.20-4.41(2H), 4.62-4.98 (4H), 5.67 (2H, s), 7.38-7.67 (4H), 8.09 (1H, d, J=6 Hz)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(2-pyrimidinylthio)acetyl!glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.57 (3H, s), 3.26 (3H, s), 3.67 (2H, s), 3.86(2H, s), 5.64 (1H, d, J=10 Hz), 5.73 (1H, d, J=10 Hz), 7.19 (1H, t, J=5Hz), 7.48-7.69 (4H), 8.21 (1H, dd, J=5, 1 Hz), 8.66 (2H, d, J=5 Hz)

(5) 3-Bromo-8-2,6-dichloro-3- N-methyl-N-(phenoxyacetyl)glycyl!amino!benzyloxy!-2-methylimidazo 1,2-a!pyridinehydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.30 (3H, s), 3.78 (2H, s), 4.51(2H, s), 5.67 (1H, d, J=10 Hz), 5.77 (1H, d, J=10 Hz), 6.90-7.10 (3H),7.25-7.42 (2H), 7.51-7.70 (4H), 8.21 (1H, dd, J=5, 2 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-(heptafluorobutanoyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.62 (3H, s), 3.28 (3H, s), 3.77 (1H, d, J=17Hz), 3.89 (1H, d, J=17 Hz), 5.62 (1H, d, J=10 Hz), 5.71 (1H, d, J=10Hz), 7.39-7.63 (4H), 8.09 (1H, dd, J=6, 1 Hz)

(7) 3-Bromo-8- 2,6-dichloro-3-N-(n-heptanoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.89 (3H, t, J=7 Hz), 1.21-1.40 (6H), 1.51-1.70(2H), 2.26 (2H, t, J=7 Hz), 2.58 (3H, s), 3.29 (3H, s), 3.68 (2H, s),5.67 (1H, d, J=10 Hz), 5.77 (1H, d, J=10 Hz), 7.52-7.70 (4H), 8.24 (1H,dd, J=5, 2 Hz)

(8) 2-Bromo-8- 2,6-dichloro-3-N-methyl-N-(cinnamoylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.30 (3H, s), 3.81 (2H, s), 5.67(1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 6.60 (1H, d, J=15 Hz),7.32-7.69 (1OH), 8.20 (1H, dd, J=5, 2 Hz)

(9) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(trans-3-pentenoyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.73 (3H, d, J=6 Hz), 2.58 (3H, s), 2.99 (2H,d, J=6 Hz), 3.29 (3H, s), 3.68 (2H, s), 5.40-5.80 (4H), 7.52-7.70 (4H),8.25 (1H, dd, J=5, 1 Hz)

(10) 3-Bromo-8- 3- N-(3-butenoyl)glycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.06 (2H, d, J=7 Hz), 3.28 (3H,s), 3.68 (2H, s), 5.18-5.31 (2H), 5.61-6.01 (3H), 7.50-7.69 (4H), 8.21(1H, dd, J=5, 3 Hz)

(11) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- (4-phenylbutanoyl)glycyl!amino!benzyloxy!-2-methylimidazo 1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ):1.83-2.02 (2H), 2.29 (2H, t, J=8 Hz), 2.57 (3H,s), 2.66 (2H, t, J=8 Hz), 3.28 (3H, s), 3.68 (2H, s), 5.65 (1H, d, J=10Hz), 5.77 (1H, d, J=10 Hz), 7.10-7.32 (5H), 7.51-7.69 (4H), 8.22 (1H,dd, J=5, 2 Hz)

(12) 3-Bromo-8- 2,6-dichloro-3- N-(N,N-dimethyl-β-alanyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo-1,2-a!pyridinehydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 2.79-2.95 (8H), 3.25 (2H, s),3.36-3.49 (2H), 3.60 (1H, d, J=17 Hz), 3.82 (1H, d, J=17 Hz), 5.67 (1H,d, J=10 Hz), 5.77 (1H, d, J=10 Hz), 7.53-7.70 (4H), 8.24 (1H, d, J=6 Hz)

(13) 3-Bromo-8- 2,6-dichloro-3- N-N'-(5-isoquinolyl)ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.29 (3H, s), 3.75 (1H, d, J=(17Hz), 3.90 (2H, d, J=17 Hz), 5.66 (1H, d, J=10 Hz), 5.78 (1H, d, J=10Hz), 7.52-7.66 (4H), 7.91 (1H, t, J=8 Hz), 8.10 (1H, d, J=8 Hz), 8.20(1H, br s), 8.50 (1H, d, J=6 Hz), 8.60 (1H, d, J=8 Hz), 8.88 (3H, d, J=6Hz), 9.60 (1H, s)

(14) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-pyrazolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.30 (3H, s), 3.79 (1H, d, J=17Hz), 3.93 (1H, d, J=17 Hz), 5.67 (1H, d, J=10 Hz), 5.76 (1H, d, J=10Hz), 6.40 (1H, d, J=3 Hz), 7.50-7.70 (4H), 8.12 (1H, d, J=3 Hz), 8.21(1H, dd, J=5, 3 Hz)

(15) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(4-pyrimidinyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.29 (3H, s), 3.71 (1H, d, J=18Hz), 3.88 (1H, d, J=18 Hz), 5.71 (2H, br s), 7.52-7.71 (4H), 8.07-8.79(2H), 8.58 (1H, br s), 8.99 (1H, br s)

(16) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(6-quinolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.28 (3H, s), 3.70 (1H, d, J=16Hz), 3.88 (1H, d, J=16 Hz), 5.64 (1H, d, J=10 Hz), 5.76 (1H, d, J=10Hz), 7.47-7.66 (4H), 7.90 (1H, dd, J=9, 5 Hz), 8.04-8.46 (4H), 8.81 (1H,d, J=9 Hz), 8.90 (1H, d, J=5 Hz)

(17) 3-Bromo-8- 2,6-dichloro-3- N-(1-indolylcarbonyl)glycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

mp: 224° C. (dec.)

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.31 (3H, s), 3.83 (1H, d, J=17Hz), 3.95 (1H, d, J=17 Hz), 5.67 (1H, d, J=10 Hz), 5.74 (1H, d, J=10Hz), 6.65 (1H, d, J=4 Hz), 7.18-7.38(2H), 7.53-7.70 (6H), 8.12 (1H, d,J=8 Hz), 8.21 (1H, m)

(18) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(morpholinocarbonyl)glycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.27 (3H, s), 3.31-3.48 (4H),3.61-3.79 (6H), 5.63 (1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 7.52-7.69(4H), 8.23 (1H, dd, J=5, 1 Hz)

(19) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(morpholinocarbonyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.29 (3H, s), 3.41-3.86 (10H),5.69 (1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 7.00 (1H, d, J=7 Hz),7.27-7.71 (7H), 8.26 (1H, d, J=5 Hz)

(20) 3-Bromo-8- 3-N-(N'-n-butylureidoacetyl)-N-methylamino!-2,6-dichlorobenzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.89 (3H, t, J=6 Hz), 1.20-1.41 (2H), 1.48-1.66(2H), 2.62 (3H, s), 3.11-3.29 (5H), 3.87 (1H, d, J=17 Hz), 4.00 (1H, d,J=17 Hz), 5.56 (1H, d, J=10 Hz), 5.71 (1H, d, J=10 Hz), 7.36-7.61 (4H),8.06 (1H, d, J=6 Hz)

(21) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-N'-(3-quinolyl)ureidoacetyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃, δ): 2.69 (3H, s), 3.23 (3H, s), 3.94 (2H, s), 5.59 (1H, d,J=10 Hz), 5.69 (1H, d, J=10 Hz), 7.36-7.60 (4H), 7.69-7.79 (2H), 8.00(1H, d, J=9 Hz), 8.11 (1H, d, J=6 Hz), 8.41 (1H, d, J=9 Hz), 9.07 (1H,br s), 9.28 (1H, br s)

(22) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(1-hydroxyethyl)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.42 (3H, d, J=6 Hz), 2.53 (3H, s), 3.28 (3H,s), 3.73 (2H, s), 4.79 (1H, q, J=6 Hz), 5.62 (1H, d, J=10 Hz), 5.77 (1H,d, J=10 Hz), 6.99 (1H, d, J=6 Hz), 7.13-7.31 (3H), 7.51-7.67 (4H), 8.20(1H, dd, J=5, 3 Hz)

(23) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(methylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.29 (3H, s), 3.84 (2H, s), 5.64(1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 6.65 (1H, d, J=16 Hz),7.28-7.33 (1H, m), 7.45-7.61 (6H, m), 7.77 (2H, d, J=8 Hz), 8.07-8.14(1H, m)

(24) 3-Bromo-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.02 (3H, br s), 3.12 (3H, br s),3.30 (3H, s), 3.81 (2H, s), 5.66 (1H, d, J=10 Hz), 5.77 (1H, d, J=10Hz), 6.68 (1H, d, J=15 Hz), 7.37-7.70 (9H), 8.21 (1H, dd, J=5, 2 Hz)

(25) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-methoxyethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.29 (3H, s), 3.42 (3H, s), 3.61(4H, s), 3.81 (2H, s), 5.67 (1H, d, J=10 Hz), 5.77 (1H, d, J=10 Hz),6.69 (1H, d, J=15 Hz), 7.50-7.70 (7H), 7.82 (2H, d, J=8 Hz), 8.21 (1H,dd, J=5, 3 Hz)

(26) 8- 3- N- 4-N,N-Bis(2-methoxyethyl)carbamoyl!-cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.21-3.87 (16H), 5.68 (1H, d,J=10 Hz), 5.77 (1H, d, J=10 Hz), 6.65 (1H, d, J=15 Hz), 7.34-7.70 (9H),3.21 (1H, m)

(27) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(4-pyridylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.30 (3H, s), 3.84 (2H, br s),5.67 (1H, d, J=10 Hz), 5.77 (1H, d, J=10 Hz), 6.72 (1H, d, J=15 Hz),7.44-7.77 (7H), 8.11 (2H, d, J=8 Hz), 8.21 (1H, t, J=4 Hz), 8.49-8.61(4H)

(28) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxo-1-pyrrolidinyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.18 (2H, quint, J=7.5 Hz), 2.54-2.68 (5H, m),3.29 (3H, s), 3.81 (2H, s), 3.89 (2H, t, J=7.5 Hz), 5.65 (1H, d, J=10Hz), 5.74 (1H, d, J=10 Hz), 6.50 (1H, d, J=16 Hz), 7.44-7.68 (9H, m),8.11 (1H, t, J=4 Hz)

(29) 3-Bromo-8- 2,6-dichloro-3- N-4-(methoxyacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.66 (3H, s), 3.29 (3H, s), 3.51 (3H, s), 3.82(2H, s), 4.03 (2H, s), 5.60-5.77 (2H, m), 6.50 (1H, d, J=16 Hz),7.40-7.65 (9H, m), 8.04-8.15 (1H, m)

(30) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(propionamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CD₃ OD, δ): 1.19 (3H, t, J=7.5 Hz), 2.40 (2H, q, J=7.5 Hz), 2.50(3H, s), 3.24 (3H, s), 3.79 (1H, d, J=16 Hz), 3.86 (1H, d, J=16 Hz),5.69-5.80 (2H, m), 6.60 (1H, d, J=15 Hz), 7.36-7.80 (9H, m)

(31) 8- 3- N-(4-(Acetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.18 (3H, s), 2.58 (3H, s), 3.28 (3H, s), 3.76(1H, d, J=16 Hz), 3.90 (1H, d, J=16 Hz), 5.65 (2H, s), 6.43 (1H, d, J=16Hz), 7.25-7.39 (2H, m), 7.39-7.64 (7H, m), 8.03-8.16 (1H, m)

(32) 3-Bromo-8- 2,6-dichloro-3- N-4-(N-methylacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.91 (3H, br s), 2.61 (3H, s), 3.28 (3H, br s),3.31 (3H, s), 3.81 (2H, br s), 5.66 (1H, br d, J=10 Hz), 5.78 (1H, br d,J=10 Hz), 6.63 (1H, d, J=15 Hz), 7.22 (2H, d, J=9 Hz), 7.46-7.70 (7H),8.20 (1H, br s)

(33) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-N-(3-pyridylmethyl)acetamido!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.99 (3H, s), 2.60 (3H, s), 3.76 (1H, d, J=18Hz), 3.88 (1H, d, J=18 Hz), 5.10 (2H, s), 5.68 (1H, d, J=10 Hz), 5.78(1H, d, J=10 Hz), 6.70 (1H, d, J=15 Hz), 7.20 (2H, d, J=8 Hz), 7.47-7.70(7H), 8.04 (1H, dd, J=8, 6 Hz), 8.22 (1H, dd, J=6, 1 Hz), 8.51 (1H, brd, J=8 Hz), 8.72-8.84 (2H)

(34) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(isonicotinoylamino)cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.30 (2H, s), 3.82 (2H, s), 5.66(1H, d, J=10 Hz), 5.75 (1H, d, J=10 Hz), 6.59 (1H, d, J=15 Hz),7.44-7.69 (7H), 7.40 (2H, d, J=9 Hz), 8.20 (1H, t, J=5 Hz), 8.60 (2H, d,J=6 Hz), 9.00 (2H, d, J=6 Hz)

(35) 3-Bromo-8- 2,6-dichloro-3- N- 4-(ethoxycarbonylacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridinehydrochloride

NMR (CDCl₃ --CD₃ OD, δ):1.34 (3H, t, J=7.5 Hz), 2.55 (3H), 3.28 (3H, s),3.50 (2H, s), 3.77 (1H, d, J=18 Hz), 3.89 (1H, d, J=18 Hz), 4.26 (2H,J=7.5 Hz), 5.60 (2H, s), 6.45 (1H, d, J=16 Hz), 7.20-7.35 (2H, m),7.35-7.64 (7H, m), 7.98 (1H, d, J=6 Hz)

(36) 8- 3- N-4-(Benzamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ, 3:1 V/V): 2.60 (3H, s), 3.29 (3H, s), 3.83 (2H,s), 5.66 (1H, d, J=9 Hz), 5.74 (1H, d, J=9 Hz), 6.56 (1H, d, J=15 Hz),7.36-7.70 (10H, m), 7.78 (2H, d, J=9 Hz), 7.93 (2H, dd, J=9, 0.5 Hz),8.21 (2H, m)

(37) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(4-pyridylacetamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ, 3:1 V/V): 2.59 (3H, s), 3.29 (3H, s), 3.78 (1H,d, J=16 Hz), 3.84 (1H, d, J=16 Hz), 4.19 (2H, s), 5.64 (1H, d, J=10 Hz),5.72 (1H, d, J=10 Hz), 6.51 (1H, d, J=15 Hz), 7.38-7.77 (9H, m),8.10-8.29 (3H, m), 8.72 (2H, d, J=7 Hz)

(38) 3-Bromo-8- 2,6-dichloro-3- N-4-(methanesulfonamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.00 (3H, s), 3.25 (3H, s), 3.82(2H, s), 5.63 (1H, d, J=10 Hz), 5.73 (1H, d, J=10 Hz), 6.51 (1H, d, J=16Hz), 7.22 (2H, d, J=8 Hz), 7.38-7.65 (7H, m), 8.07-8.19 (1H, m)

(39) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(3-methylureido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 2.80 (3H, s), 3.27 (3H, s), 3.73(1H, d, J=17 Hz), 3.95 (1H, d, J=17 Hz), 5.63 (2H, s), 6.34 (1H, d, J=16Hz), 7.19 (2H, d, J=8 Hz), 7.24-7.43 (3H, m), 7.43-7.64 (4H, m),8.05-8.14 (1H, m)

(40) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-3-(3-pyridyl)ureido!cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.30 (3H, s), 3.76 (1H, d, J=17Hz), 3.91 (1H, d, J=17 Hz), 5.66 (1H, d, J=10 Hz), 5.75 (1H, d, J=10Hz), 6.50 (1H, d, J=15 Hz), 7.36-7.70 (9H), 7.89 (1H, dd, J=8, 5 Hz),8.20 (1H, t, J=5 Hz), 8.31 (1H, d, J=6 Hz), 8.63 (1H, br d, J=8 Hz),9.34 (1H, d, J=1 Hz)

(41) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(morpholinocarbonylamino)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.30 (3H, s), 3.50-3.60 (4H),3.70-3.85 (6H), 5.66 (1H, d, J=10 Hz), 5.76 (3H, d, J=10 Hz), 6.49 (1H,d, J=15 Hz), 7.39-7.70 (9H), 8.21 (1H, dd, J=5, 3 Hz)

(42) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-pyridylcarbamoyl)phenyl!ureidoacetyl!amino!-benzyloxy!1,2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.56 (3H, s), 3.27 (3H, s), 3.83 (2H, s), 5.60(1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 7.22-7.38 (1H, m), 7.38-7.67(6H, m), 7.80-7.93 (1H, m), 8.05-8.16 (1H, m), 8.45 (2H, d, J=7.5 Hz),8.53 (2H, d, J=7.5 Hz)

(43) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(1-pyrrolidinylcarbonyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (DMSO-d₆, δ): 1.71-1.91 (4H, s), 2.39 (3H, s), 3.13 (3H, s),5.51-5.65 (2H, m), 6.42-6.51 (1H, m), 7.00 (7H, d, J=7 Hz), 7.19-7.44(3H, m), 7.51-7.75 (2H, m), 7.79-7.88 (2H, m), 8.24 (1H, d, J=6 Hz),9.07-9.16 (2 H, m)

(44) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'- 3-N-methyl-N-(3-pyridylmethyl)carbamoyl!phenyl!-ureidoacetyl!amino!benzyloxy!-2-methylimidazo-1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 3.10 (3H, s), 3.25 (3H, s),3.65-3.98 (2H, overlapped with H₂ O), 4.89 (2H, br s), 5.61 (1H, d, J=10Hz), 5.72 (1H, d, J=10 Hz), 7.02 (1H, d, J=7 Hz), 7.29 (1H, t, J=7 Hz),7.41-7.62 (6H), 8.09 (1H, dd, J=9, 6 Hz), 8.18 (1H, t, J=5 Hz), 8.60(1H, br s), 8.80 (1H, d, J=5 Hz), 8.91 (1H, br s)

(45) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-methyl-1-piperazinylcarbonyl)phenyl!ureidoacetyl!-amino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 2.90 (3H, s), 3.00-3.80 (13H),5.62 (1H, d, J=10 Hz), 5.74 (1H, d, J=10 Hz), 7.01 (1H, d, J=7 Hz),7.26-7.68 (7H ), 8.20 (1H, m)

(46) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- N'-3-(3-pyridylmethylcarbamoyl)phenyl!ureidoacetyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃ --CD₃ OD, δ): 2.51 (3H, s), 3.26 (3H, s), 3.76 (2H, s), 4.76(2H, s), 5.62 (1H, d, J=10 Hz), 5.72 (1H, d, J=10 Hz), 7.29 (1H, t, J=8Hz), 7.49-7.74 (7H), 7.99 (1H, dd, J=7, 5 Hz), 3.18 (1H, t, J=4 Hz),8.61-8.72 (2H), 8.90 (1H, br s)

(47) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(dimethylamino)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.21 (6H, s), 3.29 (3H, s), 3.66(1H, d, J=17 Hz), 3.89 (1H, d, J=17 Hz), 5.64 (1H, d, J=10 Hz), 5.76(1H, d, J=10 Hz), 7.21-7.68 (7H), 7.89 (1H, br s), 8.21 (1H, t, J=4 Hz)

(48) 3-Bromo-8- 2,6-dichloro-3- N-4-(ethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.27 (3H, t, J=7 Hz), 2.60 (3H, s), 3.30 (3H,s), 3.47 (2H, q, J=7 Hz), 3.83 (2H, s), 5.68 (1H, d, J=10 Hz), 5.77 (1H,d, J=10 Hz), 6.70 (1H, d, J=15 Hz), 7.49-7.70 (7H), 7.82 (2H, d, J=9Hz), 3.22 (1H, dd, J=5, 3 Hz)

(49) 3-Bromo-8- 2,6-dichloro-3- N-4-(N-ethyl-N-methylcarbamoyl)cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.11-1.33 (3H), 2.60 (3H, s), 2.94-3.12 (3H),3.23-3.42 (4H), 3.59 (1H, m), 3.81 (2H, s), 5.68 (1H, d, J=10 Hz), 5.77(1H, d, J=10 Hz), 6.68 (1H, d, J=15 Hz), 7.37-7.69 (9H), 8.21 (1H, dd,J=5, 3 Hz)

(50) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(1-pyrrolidinylcarbonyl)cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.78-2.07 (4H, m), 2.63 (3H, s), 3.28 (3H, s),3.34-3.51 (2H, m), 3.51-3.70 (2H, m), 3.76 (1H, d, J=18 Hz), 3.90 (1H,d, J=18 Hz), 5.63 (1H, d, J=10 Hz), 5.72 (1H, d, J=10 Hz), 6.63 (1H, d,J=16 Hz), 7.38-7.67 (9H, m), 8.03-8.17 (1H, m)

(51) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(morpholinocarbonyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.61 (3H, s), 3.30 (3H, s), 3.35-3.95 (10H, m),5.64 (1H, d, J=10 Hz), 5.74 (1H, d, J=10 Hz), 6.65 (1H, d, J=16 Hz),7.40 (2H, d, J=8 Hz), 7.46-7.65 (7H, m), 8.09-8.18 (1H, m)

(52) 3-Bromo-8- 2,6-dichloro-3- N- 4-N-(2-methoxyethyl)-N-methylcarbamoyl!cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.62 (3H, s), 3.00-3.15 (3H, m), 3.60-3.93 (4H,m), 5.63 (1H, d, J=10 Hz), 5.73 (1H, d, J=10 Hz), 6.61 (1H, d, J=16 Hz),7.41 (2H, d, J=8 Hz), 7.47-7.65 (7H, m), 8.08-8.20 (1H, m)

(53) 3-Bromo-8- 2,6-dichloro-3- N-4-(isopropylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.28 (6H, d, J=6 Hz), 2.63 (3H, s), 3.29 (3H,s), 3.77 (1H, d, J=16 Hz), 3.90 (1H, d, J=16 Hz), 4.25 (1H, m), 5.63(1H, d, J=10 Hz), 5.72 (1H, d, J=10 Hz), 6.65 (1H, d, J=16 Hz),7.41-7.63 (7H, m), 7.74 (2H, d, J=8 Hz), 8.04-8.17 (1H, m)

(54) 3-Bromo-8-2,6-dichloro-3- N-4-(n-propylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 0.99 (3H, t, J=7.5 Hz), 1.65 (2H, m), 2.61 (3H,s), 3.30 (3H, s), 3.34-3.47 (2H, m), 3.84 (2H, s-like), 5.63 (1H, d,J=10 Hz), 5.72 (1H, d, J=10 Hz), 6.66 (1H, d, J=16 Hz), 7.40-7.65 (7H,m), 7.77 (2H, d, J=8 Hz), 8.05-8.16 (1H, m)

(55) 3-Bromo-8- 2,6-dichloro-3- N-4-(3-methoxypropylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.90 (2H, quint, J=6 Hz), 2.64 (3H, s), 3.28(3H, s), 3.40 (3H, s), 3.55 (4H, q, J=6 Hz), 3.78 (1H, d, J=17.5 Hz),3.89 (1H, d, J=17.5 Hz), 5.64 (1H, d, J=10 Hz), 5.73 (1H, d, J=10 Hz),6.74 (1H, d, J=16 Hz), 7.44-7.64 (7H, m), 7.75 (2H, d, J=8 Hz),8.05-8.16 (1H, m)

(56) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-ethoxethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.22 (3H, t, J=7 Hz), 3.63 (3H,s), 3.50-3.71(6H, m) ), 3.88 (1H, d, J=18 Hz), 3.90 (1H, d, J=18 Hz), 5.65 (1H, d,J=1 Hz), 5.72 (1H, d, J=10 Hz), 6.65 (1H, d, J=16 Hz), 7.46-7.65 (7H,m), 7.79 (2H, d, J=8 Hz), 8.05-8.14 (1H, m)

(57) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-hydroxyethylcarbamoyl)cinnamoylglycyl!-N-methylaminobenzyloxy!-2-methylimidazo 1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.26 (3H, s), 3.57 (2H, t, J=5Hz), 3.78 (2H, d, J=5 Hz), 3.85 (2H, s), 5.59-5.74 (2H, m), 6.64 (2H, d,J=10 Hz), 6.40-7.64 (7H, m), 7.32 (2H, d, J=8 Hz), 8.03-8.15 (1H, m)

(58) 3-Bromo-8- 2,6-dichloro-3- N-4-(diethylcarbanoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo 1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.03-1.33 (6H, m), 2.65 (3H, s), 3.13-3.35 (5H,m), 3.45-3.63 (2H, m), 3.77 (1H, d, J=18 Hz), 3.90 (1H, d, J=18 Hz),5.63 (1H, d, J=10 Hz), 5.71 ((H, d, J=10 Hz), 6.60 (5H, d, J=16 Hz),7.33 (2H, d, J=8 Hz), 7.41-7.63 (7H, m), 8.02-8.13 (1H, m)

(59) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxopiperidino)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.90-2.03 (4H, m), 2.50-2.66 (5H, m), 3.60-3.72(2H, m), 3.80 (2H, s), 5.65 (1H, d, J=10 Hz), 5.75 (1H, d, J=10 Hz),6.55 (1H, d, J=16 Hz), 7.27 (2H, d, J=8 Hz), 7.45-7.67 (7H, m),8.09-8.21 (1H, m)

(60) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(N-methyl-2-methoxyacetamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ, 3:1 V/V): 2.60 (3H, s), 3.30 (6H, s), 3.35 (3H,s), 3.76-3.96 (4H, m), 5.68 (1H, d, J=9 Hz), 5.76 (1H, d, J=9 Hz), 6.69(1H, d, J=15 Hz), 7.26 (2H, br d, J=8 Hz), 7.48-7.73 (7H, m), 8.24 (1H,br d, J=8 Hz)

(61) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(1-pyrrolyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.61 (3H, s), 3.30 (3H, s), 3.81 (2H, s), 5.68(1H, d, J=10 Hz), 5.78 (1H, d, J=10 Hz), 6.39 (2H, s), 6.60 (1H, d, J=15Hz), 7.38-7.70 (11H), 8.20 (1H, dd, J=5, 3 Hz)

(62) 3-Bromo-8- 2,6-dichloro-3- N-4-(3-methoxypropionamido)cinnamoylglycyl!-N-methylamino!-benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55-2.70 (5H, m), 3.30 (3H, s), 3.44 (3H, s),3.76 (2H, t, J=6 Hz), 3.83 (2H, s), 5.67 (2H, s), 6.46 (1H, d, J=16 Hz),7.33-7.63 (9H, m), 8.02-8.14 (1H, m)

(63) 8- 3- N-4-(Acetamidoacetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.07 (3H, s), 2.56 (3H, s), 3.27 (3H, s), 3.75(1H, d, J=17 Hz), 3.88 (1H, d, J=17 Hz), 4.00 (2H, s), 5.59-5.75 (2H,m), 6.48 (1H, d, J=16 Hz), 7.35-7.43 (2H, m), 7.45-7.67 (7H, m),8.08-8.19 (1H, m)

(64) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-(dimethylamino)acetamido!cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.04 (6H, s), 3.27 (3H, s), 3.83(2H, br s), 4.21 (2H, br s), 5.64 (2H, br s), 6.46 (1H, d, J=16 Hz),7.26-7.67 (9H, m), 8.06-8.16 (1H, m)

(65) 3-Bromo-8- 2,6-dichloro-3- N-4-(succinimido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 2.95 (4H, s), 3.30 (3H, s), 3.81(2H, s), 5.68 (1H, br d, J=10 Hz), 5.78 (1H, br d, J=10 Hz), 6.64 (1H,d, J=16 Hz), 7.35 (2H, d, J=9 Hz), 7.50-7.60 (7H), 8.21 (1H, m)

(66) 3-Bromo-8- 2,6-dichloro-3- N- 4-(E)-3-(ethoxycarbonyl)acrylamido!cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ, 3:1, V/V): 1.36 (3H, t, J=7.5 Hz), 2.49 (3H, s),3.28 (3H, s), 3.37 (2H, q, J=7.5 Hz), 3.81 (2H, s), 5.66 (1H, d, J=9Hz), 5.75 (1H, d, J=9 Hz), 6.56 (1H, d, J=15 Hz), 6.91 (1H, d, J=15 Hz),7.17 (1H, d, J=15 Hz), 7.36-7.80 (9H, m), 8.20 (1H, br d, J=4 Hz)

(67) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-oxo-3-oxazolidinyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.28 (3H, s), 3.81 (2H, s), 4.11(2H, dd, J=6, 8 Hz), 4.52 (2H, dd, J=6, 8 Hz), 5.64 (1H, d, J=10 Hz),5.74 (1H, d, J=10 Hz), 6.54 (1H, d, J=16 Hz), 7.37-7.69 (9H, m),8.07-8.20 (1H, m)

(68) 8- 3- N- N'- 3-N,N-Bis(2-methoxyethyl)carbamoyl!-phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo-1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.56 (3H, s), 3.22 (3H, s), 3.52-3.73 (4H, m),3.79 (1H, d, J=18 Hz), 4.01 (1H, d, J=18 Hz), 5.58 (1H, d, J=10 Hz),5.65 (1H, d, J=10 Hz), 6.88 (1H, d, J=7.5 Hz), 7.20 (1H, t, J=8 Hz),7.33-7.56 (6H, m), 8.06 (1H, d, J=6 Hz)

(69) 3-Bromo-8-2,6-dichloro-3- N- N'-3-(2-methoxyethylcarbamoyl)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 3.24 (3H, s), 3.38 (3H, s), 3.55(4H, s-like), 3.88 (2H, s), 5.61 (2H, s), 7.19 (1H, t, J=8 Hz),7.25-7.40 (1H, m), 7.40-7.54 (5H, m), 7.60-7.66 (1H, m), 8.07 (1H, d,J=6 Hz)

(70) 3-Bromo-8- 2,6-dichloro-3- N- N'- 3-N-(2-methoxyethyl)-N-methylcarbamoyl!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!-pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 2.94-3.07 (3H, m), 3.55-3.69 (2H,br peak), 3.75 (1H, d, J=16 Hz), 3.87 (1H, d, J=16 Hz), 5.58 (1H, d,J=10 Hz), 5.69 (1H, d, J=10 Hz), 6.92 (1H, d, J=7.5 Hz), 7.22 (1H, t,J=7.5 Hz), 7.28-7.59 (6H, m), 8.05-8.15 (1H, m)

(71) 3-Bromo-8- 2,6-dichloro-3- N- N'- 3-N,N-bis(2-ethoxyethyl)carbamoyl!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.05-1.28 (6H, m), 2.54 (3H, s), 3.25 (3H, s),3.30-3.80 (13H, m), 3.86 (1H, d, J=17.5 Hz), 5.58 (1H, d, J=10 Hz), 5.67(1H, d, J=10 Hz), 6.94 (1H, d, J=7.5 Hz), 7.15-7.35 (2H, m), 7.35-7.60(5H, m),8.07 (1H, d, J=6 Hz)

(72) 3-Bromo-8- 2,6-dichloro-3- N- N'- 3-N,N-bis(2-hydroxyethyl)carbamoyl!phenyl!ueidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.23 (3H, s), 3.53-3.75 (4H, brpeak), 3.75-3.94 (4H, br peak), 5.57 (1H, d, J=10 Hz), 5.67 (1H, d, J=10Hz), 6.99 (1H, d, J=7.5 Hz), 7.21 (1H, t, J=7.5 Hz), 7.25-7.60 (6H, m),8.08 (1H, d, J=6 Hz)

(73) 3-Bromo-8- 2,6-dichloro-3- N- N'-3-(methoxyacetamido)phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!-pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 3.28 (3H, s), 3.51 (3H, s), 3.74(2H, s), 3.92-4.09 (2H, overlapped with H₂ O), 5.63 (1H, d, J=10 Hz),5.74 (1H, d, J=10 Hz), 7.13-7.20 (3H), 7.51-7.66 (5H), 8.19 (1H, t, J=3Hz)

(74) 3-Bromo-8- 2,6-dichloro-3- N- N'- N 3-(ethoxycarbonyl)acetamido!phenyl!ureidoacetyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.31 (3H, t, J=7 Hz), 2.52 (3H, s), 3.28 (3H,s), 3.47 (2H, s), 3.75 (2H, br s), 4.23 (2H, q, J=7 Hz), 5.63 (1H, br d,J=10 Hz), 5.73 (1H, br d, J=10 Hz), 7.11-7.20 (3H), 7.49-7.66 (5H), 8.18(1H, br t, J=4 Hz)

(75) 3-Chloro-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.02 (3H, br s), 3.12 (3H, br s),3.30 (3H, s), 3.81 (2H, s), 5.68 (1H, d, J=10 Hz), 5.78 (1H, d, J=10Hz), 6.69 (1H, d, J=16 Hz), 7.41-7.70 (9H), 8.20 (1H, t, J=4 Hz)

(76) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(methylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.61 (3H, s), 3.98 (3H, s), 3.29 (3H, s), 3.84(2H, s), 5.62 (1H, d, J=10 Hz), 5.70 (2H, d, J=10 Hz), 6.64 (1H, d, J=16Hz), 7.42-7.66 (7H, m), 7.77 (2H, d, J=8 Hz), 8.02-8.14 (9H, m)

(77) 3-Chloro-8- 2,6-dichloro-3- N- 4-(2-methoxyethyl)carbamoyl!cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.61 (3H, s), 3.29 (3H, s), 3.41 (3H, s),3.47-3.73 (4H, overlapped with H₂ O), 3.82 (2H, br s), 5.65 (1H, d, J=10Hz), 5.74 (1H, d, J=10 Hz), 6.68 (1H, d, J=15 Hz), 7.48-7.66 (7H), 7.80(2H, br d, J=9 Hz), 8.14 (1H, t, J=4 Hz)

(78) 3-Chloro-8- 2,6-dichloro-3- N-4-(N-ethyl-N-methylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.07-1.33 (3H, m), 2.61 (3H, s), 3.27 (3H, s),3.44-3.66 (2H, m), 3.76 (1H, d, J=18 Hz), 3.88 (1H, d, J=18 Hz), 5.63(1H, d, J=10 Hz), 5.73 (1H, d, J=10 Hz), 6.61 (1H, d, J=16 Hz),7.23-7.44 (2H, m), 7.44-7.63 (7H, m), 8.01-8.15 (1H, m)

(79) 3-Chloro-8- 2,6-dichloro-3- N-4-(ethylcarbamoyl)cinnanoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.25 (3H, t, J=7.5 Hz), 2.61 (3H, s), 3.26 (3H,s), 3.45 (2H, q, J=7.5 Hz), 3.78 (1H, d, J=17.5 Hz), 3.90 (1H, d, J=17.5Hz), 5.63 (1H, d, J=10 Hz), 5.70 (1H, d, J=10 Hz), 6.64 (1H, d, J=16Hz), 7.41-7.64 (7H, m), 7.76 (2H, d, J=8 Hz), 8.00-8.13 (1H, m)

(80) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(2-oxo-1-pyrrolidinyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ): 2.20 (2H, quint, J=7 Hz), 2.55-2.70 (5H, m), 3.28 (3H,s), 3.80 (3H, s), 3.90 (2H, t, J=7.5 Hz), 5.65 (1H, d, J=10 Hz), 5.74(1H, d, J=10 Hz), 6.51 (1H, d, J=16 Hz), 7.40-7.58 (9H, m), 8.04-8.15(1H, m)

(81) 8- 3- N-4-(Acetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.19 (3H, s), 2.60 (3H, s), 3.28 (3H, s), 3.78(1H, d, J=18 Hz), 3.89 (1H, d, J=18 Hz), 5.67 (2H, s), 6.46 (1H, d, J=16Hz), 7.24-7.64 (9H, m), 8.02-8.13 (1H, m)

(82) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(3-methylureido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.58 (3H, s), 2.81 (3H, s), 3.29 (3H, s), 3.74(1H, d, J=17 Hz), 3.83-4.00 (1H, overlapped with H₂ O), 5.63 (1H, d,J=10 Hz), 5.71 (1H, d, J=10 Hz), 6.40 (1H, d, J=16 Hz), 7.28-7.46 (5H),7.51-7.68 (4H), 8.18 (1H, dd, J=5.1 Hz)

(83) 3-Chloro-8- 2,6-dichloro-3- N-4-(methoxyacetamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.29 (3H, s), 3.52 (3H, s),3.64-3.98 (2H, overlapped with H₂ O), 4.03 (2H, s), 5.66 (1H, d, J=10Hz), 5.77 (1H, d, J=10 Hz), 6.52 (1H, d, J=16 Hz), 7.42-7.68 (9H), 8.19(1H, t, J=4 Hz)

(84) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N-4-(propionamido)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.23 (3H, t, J=7.5 Hz), 2.42 (2H, q, J=7.5 Hz),2.59 (3H, s), 3.28 (3H, s), 3.76 (1H, d, J=17.5 Hz), 3.88 (1H, d, J=17.5Hz), 5.66 (2H, s), 6.43 (1H, d, J=16 Hz), 7.32-7.63 (9H, m), 8.01-8.12(1H, m)

(85) 3-Chloro-8- 2,6-dichloro-3- N-4-(3-methoxypropionamido)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55-2.70 (5H), 3.29 (3H, s), 3.92 (3H, s),3.70-4.00 (4H, overlapped with H₂ O), 5.61-5.69 (2H), 6.50 (1H, d J=16Hz), 7.39-7.68 (9H), 8.18 (1H, br s)

(86) 8- 3- N-4-(Acetamidoacetamido)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.09 (3H, s), 2.59 (3H, s), 3.82 (2H, d, J=6Hz), 4.00 (2H, s), 5.68 (2H, s-like), 6.47 (2H, d, J=16 Hz), 7.35-7.69(9H, m), 8.06-8.15 (1H, m)

(87) 8- 3- N- N'- 3-N,N-Bis(2-methoxyethyl)carbamoyl!phenyl!ureidoacetyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-chloro-2-methylimidazo!1,2-a!pyridinehydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 3.28 (3H, s), 3.31-3.79 (16 Hz),5.63 (1H, d, J=10 Hz), 5.75 (1H, d, J=10 Hz), 6.99 (1H, d, J=7 Hz),7.20-7.48 (3H), 7.51-7.67 (4H), 8.18 (1H, t, J=4 Hz)

(88) 3-Chloro-8- 2,6-dichloro-3- N-methyl-N- N'-3-(4-pyridylcarbamoyl)phenyl!ureidoacetyl!amino!benzyloxy!-2-methylimidazo 1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ, 3:1 V/V): 2.55 (3H, s), 3.27 (3H, s), 3.70 (4H,d, J=15 Hz), 3.79 (1H, d, J=15 Hz), 5.65 (1H, d, J=9 Hz), 5.75 (1H, d,J=9 Hz), 7.39 (1H, d, J=8 Hz), 7.51-7.75 (6H, m), 7.98 (1H, m),8.15-8.26 (1H, m), 8.50 (2H, d, J=8 Hz), 8.56 (1H, d, J=8 Hz)

(89) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-(E)-3-(6-methylcarbamoyl-3-pyridyl)acryloylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDl₃ --CD₃ OD, δ): 2.62 (3H, s), 3.05 (3H, s), 3.29 (3H, s),3.70-3.85 (1H, overlapped with H₂ O), 3.91 (1H, d, J=18 Hz), 5.64 (1H,d, J=10 Hz), 5.73 (1H, d, J=10 Hz), 6.90 (1H, d, J=16 Hz), 7.50-7.67(5H), 8.11-8.27 (2H), 8.32 (1H, br d, J=8 Hz), 8.82 (1H, br s)

(90) 8- 3- N-(E)-3-(6-Acetamido-3-pyridyl)acryloylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.41 (3H, s), 2.60 (3H, s), 3.28 (3H, s), 3.75(1H, d, J=18 Hz), 3.91 (1H, d, J=18 Hz), 5.63 (1H, d, J=10 Hz), 5.75(1H, d, J=10 Hz), 6.92 (1H, d, J=16 Hz), 7.40-7.65 (5H), 8.00 (1H, d,J=9 Hz), 8.20 (1H, t, J=5 Hz), 8.46-8.61 (2H)

(91) 3-Bromo-8- 2,6-dichloro-3- N-4-(2-hydroxyethoxy)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD): 2.63 (3H, s), 3.29 (3H, s), 3.80 (2H, s), 3.94(2H, t, J=5 Hz), 4.10 (2H, t, J=5 Hz), 5.60-5.77 (2H, m), 6.43 (1H, d,J=16 Hz), 6.90 (2H, d, J=8 Hz), 7.40-7.64 (7H, m), 8.07-8.17 (1H, m)

(92) 3-Bromo-8- 2,6-dichloro-3-N-(3,4-dimethoxycinnamoylglycyl)-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.64 (3H, s), 3.30 (3H, s), 3.80 (2H, s), 3.91(3H, s), 3.94 (3H, s), 5.65 (1H, d, J=10 Hz), 5.75 (1H, d, J=10 Hz),6.44 (1H, d, J=16 Hz), 6.87 (1H, d, J=8 Hz), 7.03-7.15 (2H, m),7.39-7.65 (5H, m), 8.05-8.19 (1H, m)

(93) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-3,4-(methylenedioxy)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine hydrochloride

NMR (CDCl₃, δ): 2.60 (3H, s), 3.80 (3H, s), 5.65 (1H, d, J=10 Hz)) 5.74(1H, d, J=10 Hz), 6.00 (2H, s), 6.40 (7H, d, J=16 Hz), 6.80 (1H l d, J=8Hz), 6.94-7.04 (2H, m), 7.37-7.66 (5H, m), 8.09-8.19 (8H, m)

(94) 3-Bromo-8- 2,6-dichloro-3- N-(E)-3-(6-dimethylcarbamoyl-3-pyridyl)acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 3.02 (3H, br s), 3.10 (3H, br s),3.20 (3H, s), 3.70 (1H, d, J=17 Hz), 3.86 (1H, d, J=17 Hz), 5.56 (1H, d,J=10 Hz), 5.67 (1H, d, J=10 Hz), 6.85 (1H, d, J=16 Hz) 7.38-7.59 (5H),7.71 (1H, br d, J=8 Hz), 8.09 (1H, t, J=4 Hz), 8.21 (1H, br d, J=8 Hz),8.80 (1H, br s)

(95) 3-Bromo-8- 2,6-dichloro-3- N- (E)-3-(6-ethylcarbamoyl-3-pyridyl)acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.22 (3H, t, J=7 Hz), 2.57 (3H, s), 3.46 (1H,q, J=7 Hz), 3.73 (1H, d, J=17 Hz), 3.89 (1H, d, J=17 Hz), 5.58 (1H, d,J=10 Hz), 5.68 (1H, d, J=16 Hz), 6.81 (1H, d, J=16 Hz), 7.38-7.59 (5H),8.00-8.19 (2H), 8.26 (1H, d, J=8 Hz), 8.75 (1H, br s)

(96) 3-Bromo-8- 2,6-dichloro-3- N- (E)-3-6-(3-methoxypropylcarbamoyl)-3-pyridyl!acryloylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 1.85 (2H, quint, J=6 Hz), 2.58 (3H, s), 3.23(3H, s), 3.41-3.60 (4H, m), 3.73 (1H, d, J=17.5 Hz), 3.88 (1H, d, J=17.5Hz), 5.57 (1H, d, J=10 Hz), 5.67 (1H, d, J=10 Hz), 6.78 (1H, d, J=16Hz), 7.37-7.60 (5H, m), 7.98-8.11 (2H, m), 8.17 (1H, d, J=8 Hz),8.66-8.74 (1H, m)

Example 94

3-Chloro-8-(2,6-dichlorophenyl)methylamino-2-methylimidazo1,2-a!pyridine was obtained according to a similar manner to that ofExample 2.

mp: 142.9° C. (dec.)

Example 95

Sulfuric acid salt of 3-bromo-8- 2,6-dichloro-3-N-methyl-N-(butyrylglycyl)amino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained by mixing 3-bromo-8- 2,6-dichloro-3-N-methyl-N-(butyrylglycyl)amino!benzyl-2-methylimidazo 1,2-a!pyridinewith sulfuric acid.

mp: 154°-156° C.

Example 96

Maleic acid salt of 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!-pyridine was obtained by mixing 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo-1,2-a!pyridine with maleic acid.

mp: 193°-195° C.

Example 97

Methanesulfonic acid salt of 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained by mixing 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!pyridine with methanesulfonic acid.

mp: 165° C. (dec.)

Example 98

Oxalic acid salt of 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo1,2-a!-pyridine was obtained by mixing 3-chloro-8-2,6-dichloro-3-(N-methyl-N-acetylamino)benzyloxy!-2-methylimidazo-1,2-a!pyridinewith oxalic acid.

mp: 180°-181° C.

Example 99

Methanesulfonic acid salt of 3-bromo-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine was obtained by mixing 3-bromo-8- 2,6-dichloro-3- N-4-(dimethylcarbamoyl)cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine with methanesulfonic acid.

mp: 195.5° C.

p NMR (DMSO-d₆, δ): 2.30 (3H, s), 2.38 (3H, s), 2.90 (3H, br s), 2.98(3H, br s), 3.15 (3H, s), 3.52 (1H, dd, J=17, 4 Hz), 3.83 (1H, dd, J=17,5 Hz), 5.56 (1H, d, J=9 Hz), 5.61 (1H, d, J=9 Hz), 6.84 (1H, d, J=15Hz), 7.34-7.48 (3H, m), 7.50-7.75 (3H, m), 7.81 (1H, d, J=8 Hz), 7.86(1H, d, J=8 Hz), 8.24 (1H, d, J=7.5 Hz), 8.36 (1H, t, J=7.5 Hz)

Example 100

The following compounds were obtained according to a similar manner tothat of Example 67.

(1) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-(2-pyridylmethyl)carbamoyl!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.44 (3H, s), 3.28 (3H, s), 3.68 (1H, dd, J=4, 16 Hz),3.91 (1H, dd, J=4, 16 Hz), 4.76 (2H, d, J=4 Hz), 5.49 (1H, d, J=10 Hz),5.53 (1H, d, J=10 Hz), 6.53 (1H, d, J=16 Hz), 6.70 (1H, t-like), 6.73(1H, d, J=7.5 Hz), 6.86 (1H, t, J=7.5 Hz), 7.20-7.29 (1H, m), 7.29-7.37(2H, m), 7.50 (1H, d, J=8 Hz), 7.54-7.61 (2H, m), 7.61-7.74 (2H, m),7.77 (1H, d, J=6 Hz), 7.89 (2H, d, J=8 Hz), 8.59 (1H, d, J=4 Hz) itsdihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 3.24 (3H, s), 3.72-3.89 (2H, m),4.95 (3H, s), 5.61 (1H, d, J=10 Hz), 5.68 (1H, d, J=10 Hz), 6.60 (1H, d,J=16 Hz), 7.41-7.60 (7H, m), 7.82 (1H, t, J=7.5 Hz), 7.93 (2H, d, J=8Hz), 8.02-8.09 (1H, m), 8.11 (1H, d, J=8 Hz), 8.40 (1H, t, J=7.5 Hz),8.68 (1H, d, J=6 Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-(3-pyridylmethyl)carbamoyl!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.66 (1H, dd, J=4, 16 Hz),3.91 (1H, dd, J=4, 16 Hz), 4.67 (2H, d, J=6 Hz), 5.46 (1H, d, J=10 Hz),5.52 (1H, d, J=10 Hz), 6.53 (1H, d, J=15 Hz), 6.61 (1H, t-like), 6.20(1H, t-like), 6.72 (1H, d, J=7.5 Hz), 6.85 (1H, t, J=7.5 Hz), 7.25-7.36(2H, m), 7.49 (1H, d, J=7.5 Hz), 7.52-7.62 (3H, m), 7.71 (1H, d, J=7.5Hz), 7.74-7.83 (3H, m), 8.55 (1H, d, J=6 Hz), 8.60 (1H, s-like) itsdihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.22 (3H, s), 3.81 (2H, s), 4.74(2H, s), 5.60 (1H, d, J=10 Hz), 5.66 (1H, d, J=10 Hz), 6.60 (1H, d, J=16Hz), 7.35-7.58 (7H, m), 7.84-7.93 (3H, m), 8.06 (1H, d, J=6 Hz),8.59-8.70 (2H, m), 8.93 (1H, s-like)

(3) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-(4-pyridylmethyl)carbamoyl!cinnamoylglycyl!amino!-benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.42 (3H, s), 3.26 (3H, s), 3.65 (1H, dd, J=17, 4 Hz),3.90 (1H, dd, J=17, 5 Hz), 4.65 (2H, d, J=7 Hz), 5.47 (1H, d, J=9 Hz),5.51 (1H, d, J=9 Hz), 6.54 (1H, d, J=15 Hz), 6.67-6.81 (3H, m), 6.86(1H, t, J=7 Hz), 7.25 (2H, d, J=7 Hz), 7.32 (1H, d, J=8 Hz), 7.47 (1H,d, J=7 Hz), 7.51-7.62 (3H, m), 7.76 (1H, d, J=7 Hz), 7.81 (2H, d, J=9Hz), 8.52-8.60 (2H, m) its dihydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.54 (3H, s), 3.20 (3H, s), 3.80 (2H, br s),4.79 (2H, br s), 5.58 (1H, d, J=9 Hz), 5.65 (1H, d, J=9 Hz), 6.63 (1H,d, J=15 Hz), 7.33-7.60 (7H, m), 7.94 (2H, br d, J=7.5 Hz), 7.99 (2H, brd, J=7 Hz), 8.07 (1H, br s), 8.56-8.66 (2H, m)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(allylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.27 (3H, s), 3.66 (1H, dd, J=17, 4 Hz),3.90 (1H, dd, J=17, 5 Hz), 4.04-4.14 (2H, m), 5.18 (1H, d, J=10 Hz),5.26 (1H, d, J=17 Hz), 5.46 (1H, d, J=9 Hz), 5.51 (1H, d, J=9 Hz),5.86-6.02 (1H, m), 6.23 (1H, br t, J=6 Hz), 6.53 (1H, d, J=17 Hz), 6.69(1H, br t, J=6 Hz), 6.72 (1H, d, J=7 Hz), 6.85 (1H, d, J=7 Hz), 7.33(1H, d, J=7.5 Hz), 7.49 (1H, d, J=7.5 Hz), 7.52-7.64 (3H, m), 7.72-7.83(3H, m) its hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.55 (3H, s), 3.21 (3H, s), 3.73 (1H, d, J=17Hz), 3.81 (1H, d, J=17 Hz), 3.99 (2H, d, J=5 Hz), 5.11 (1H, d, J=10 Hz),5.20 (1H, d, J=15 Hz), 5.57 (1H, d, J=9 Hz), 5.64 (1H, d, J=9 Hz),5.80-5.96 (1H, m), 6.60 (1H, d, J=15 Hz), 7.40-7.55 (9H, m), 7.72 (2H,d, J=9 Hz), 8.05 (1H, m)

(5) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N-4-(2-propynylcarbamoyl)cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.26-2.30 (1H, m), 2.42 (3H, s), 3.26 (3H, s), 3.67 (1H,dd, J=17, 4 Hz), 3.90 (1H, dd, J=17, 5 Hz), 4.20-4.30 (2H, m), 5.47 (1H,d, J=9 Hz), 5.51 (1H, d, J=9 Hz), 6.37 (1H, br t, J=5 Hz), 6.53 (1H, d,J=15 Hz), 6.69 (1H, br s), 6.71 (1H, d, J=7 Hz), 6.85 (1H, t, J=7 Hz),7.33 (1H, d, J=7.5 Hz), 7.48 (1H, d, J=7.5 Hz), 7.50-7.64 (3H, m),7.72-7.84 (3H, m) its hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.24 (1H, t, J=3 Hz), 2.56 (3H, s), 3.22 (3H,s), 3.76 (1H, d, J=17 Hz), 3.82 (1H, d, J=17 Hz), 4.15 (2H, d, J=3 Hz),5.58 (1H, d, J=9 Hz), 5.63 (1H, d, J=9 Hz), 6.60 (1H, d, J=15 Hz),7.39-7.56 (7H, m), 7.74 (2H, d, J=9 Hz), 8.05 (1H, br d, J=7 Hz)

(6) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-(methylcarbamoylmethyl)carbamoyl!cinnamoylglycyl!-amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 2.87 (3H, d, J=5 Hz), 3.28 (3H, s), 3.67(1H, dd, J=4, 16 Hz), 3.92 (1H, dd, J=4, 16 Hz), 4.10 (2H, d, J=5 Hz),5.48 (1H, d, J=10 Hz), 5.53 (1H, d, J=10 Hz), 6.10 (1H, br), 6.54 (1H,d, J=16 Hz), 6.70-6.80 (2H, m), 6.86 (1H, t, J=7.5 Hz), 7.09 (1H,t-like), 7.35 (1H, d, J=8 Hz), 7.50 (1H, d, J=8 Hz), 7.52-7.63 (3H, m),7.77 (1H, d, J=7 Hz), 7.82 (2H, d, J=8 Hz) its hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.60 (3H, s), 2.80 (3H, s), 3.23 (3H, s), 3.73(1H, d, J=18 Hz), 7.86 (1H, d, J=18 Hz), 4.03 (2H, s), 5.57-5.69 (2H,m), 6.60 (1H, d, J=16 Hz), 7.36-7.56 (7H, m), 7.80 (2H, d, J=8 Hz), 8.05(1H, d, J=6 Hz)

Example 101

The following compounds were obtained according to similar manners tothose of Examples 81 or 82.

(1) 8- 3- N-4-(Acryloylamino)cinnamoylglycyl!-N-methylamino!-2,6-dichlorobenzyloxy!-3-bromo-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.65 (1H, dd, J=4, 18 Hz),3.89 (1H, dd, J=5, 18 Hz), 5.45 (1H, d, J=10 Hz), 5.50 (1H, d, J=10 Hz),5.78 (1H, d, J=10 Hz), 6.25 (1H, dd, J=10, 17 Hz), 6.40 (1H, d, J=15Hz), 6.45 (1H, d, J=17 Hz), 6.60 (1H, t-like), 6.73 (1H, d, J=7.5 Hz),6.87 (1H, t, J=7.5 Hz), 7.32 (1H, d, J=8 Hz), 7.42-7.50 (3H, m), 7.53(1H, d, J=15 Hz), 7.58-7.72 (3H, m), 7.77 (1H, d, J=7.5 Hz) itshydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.53 (3H, s), 3.25 (3H, s), 3.76 (1H, d, J=16Hz), 3.85 (1H, d, J=16 Hz), 5.61 (2H, s), 5.70 (1H, dd, J=2, 10 Hz),6.31-6.46 (3H, m), 7.25-7.56 (7H, m), 7.61 (2H, d, J=8 Hz), 8.03 (1H, d,J=6 Hz)

(2) 3-Bromo-8- 2,6-dichloro-3- N- 4-(2-furylcarbonyl)amino!cinnamoylglycyl!-N-methylamino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ):2.45 (3H, s), 3.30 (3H, s), 3.70 (1H, dd, J=4, 18 Hz),3.93 (1H, dd, J=5, 18 Hz), 5.50 (1H, d, J=10 Hz), 5.54 (1H, d, J=10 Hz),6.43 (1H, d, J=16 Hz), 6.56-6.65 (2H, m), 6.75 (1H, d, J=7.5 Hz), 6.88(1H, t, J=7.5 Hz), 7.26-7.31 (1H, m), 7.35 (1H, d, J=7.5 Hz), 7.47-7.63(5H, m), 7.70 (2H, d, J=8 Hz), 7.79 (1H, d, J=7.5 Hz), 8.17 (1H, s) itshydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.59 (3H, s), 3.26 (3H, s), 3.80 (2H, s),5.59-5.70 (2H, m), 6.46 (1H, d, J=16 Hz), 6.55 (1H, d, J=2 Hz),7.38-7.58 (8H, m), 7.60-7.67 (3H, m), 8.01-8.09 (1H, m)

(3) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-2-(2-thienyl)acetamido!cinnamoylglycyl!amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.66 (1H, dd, J=16, 4 Hz),3.90 (1H, dd, J=16, 4 Hz), 3.96 (2H, s), 5.66 (1H, d, J=10 Hz), 5.51(1H, d, J=10 Hz), 6.39 (1H, d, J=16 Hz), 6.59 (1H, t-like), 6.72 (1H, d,J=7.5 Hz), 6.86 (1H, t, J=7.5 Hz), 7.01-7.10 (2H, m), 7.32 (2H, d, J=8Hz), 7.40-7.56 (7H, m), 7.77 (1H, d, J=6 Hz) its hydrochloride

NMR (CDCl₃ --CD₃ OD, δ): 2.52 (3H, s), 3.23 (3H, s), 3.76 (1H, d, J=17Hz), 3.85 (1H, d, J=17 Hz), 3.95 (2H, s), 5.60 (2H, s), 6.39 (1H, d,J=16 Hz), 6.93-7.00 (1H, m), 7.04 (1H, d, J=3 Hz), 7.20-7.26 (1H, m),7.33 (1H, d, J=16 Hz), 7.38-7.56 (8H, m), 7.98 (1H, d, J=6 Hz)

(4) 3-Bromo-8- 2,6-dichloro-3- N-methyl-N- 4-2-(1-methyl-1H-pyrrol-2-yl)acetamido!cinnamoylglycyl!-amino!benzyloxy!-2-methylimidazo1,2-a!pyridine

NMR (CDCl₃, δ): 2.43 (3H, s), 3.26 (3H, s), 3.56 (3H, s), 3.66 (1H, dd,J=4, 18 Hz), 3.73 (2H, s), 3.90 (1H, dd, J=4, 18 Hz), 5.47 (1H, d, J=10Hz), 5.52 (1H, d, J=10 Hz), 6.13-6.20 (2H, m), 6.40 (1H, d, J=16 Hz),6.58 (1H, t-like), 6.66-6.79 (2H, m), 6.82-6.90 (1H, m), 7.29-7.38 (2H,m), 7.42-7.57 (6H, m), 7.77 (1H, d, J=6 Hz)

What we claim is:
 1. A process for preparing a compound of the formula:##STR7## wherein R¹ is halogen, R² and R³ are each hydrogen, loweralkyl, halo(lower)alkyl or acyl,R⁴ is aryl substituted with at least twosubstituents selected from the group consisting of:halogen;halo(lower)alkyl; acyl; aryl; aryl substituted with halogen or cyano;ar(lower)alkyl substituted with hydroxy; lower alkoxy; nitro; amino;amino substituted with substituents selected from the group consistingof lower alkyl, acyl, ar(lower)alkyl, heterocyclic(lower)alkyl,carboxy(lower)alkyl, lower alkylaminomethylene andN-methylpyrrolidinylidene; a heterocyclic group and a heterocyclic groupsubstituted with oxo; or R⁴ is a heterocyclic group substituted with atleast two substituents selected from the group consisting of:halogen;lower alkyl; halo(lower)alkyl; acyl; aryl; aryl substituted with halogenor cyano; ar(lower)alkyl substituted with hydroxy; lower alkoxy; oxo;nitro; amino; amino substituted with substituent(s) selected from thegroup consisting of lower alkyl, acyl, ar(lower)alkyl,heterocyclic(lower)alkyl, carboxy(lower)alkyl, lower alkylaminomethyleneand N-methylpyrrolidinylidene; a heterocyclic group and a heterocyclicgroup substituted with oxo; Q is O or N--R¹¹,in which R¹¹ is hydrogen oracyl, and A is lower alkylene, or salt thereof, which comprises:halogenating a compound of the formula: ##STR8## wherein R², R³, R⁴, Qand A are each as defined above, or salt thereof thereof.